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How to write the conclusion of your case study

You worked on an amazing UX project. You documented every detail and deliverable and when the time came, you began to write a UX case study about it. In the case study, you highlighted how you worked through a Design Thinking process to get to the end result; so, can you stop there and now move on to the next thing? Well, no! There’s just one more bit left to finish up and make the perfect case study. So, get ready; we will now explore how you can write the perfect conclusion to wrap it all up and leave a lasting great impression.

Every start has an end – we’re not just repeating the famous quote here, because for case studies, a proper end is your last and final chance to leave a lasting great (at the very least, good) impression with whoever is reading your work (typically, recruiters!). Many junior UX designers often forget about the conclusion part of the case study, but this is a costly mistake to make. A well-written case study must end with an appropriate final section, in which you should summarize the key takeaways that you want others to remember about you and your work. Let’s see why.

Last impressions are just as important as first ones

We’ll go to some length here to convince you about the importance of last impressions, especially as we can understand the reason behind not wanting to pay very much attention to the end of your case study, after all the hard work you put into writing the process section. You are tired, and anyone who’s read your work should already have a good idea about your skills, anyway. Surely—you could be forgiven for thinking, at least—all that awesome material you put in the start and middle sections must have built up the momentum to take your work into orbit and make the recruiter’s last impression of you a lasting—and very good—one, and all you need to do now is take your leave. However, psychologist Saul McLeod (2008) explains how early work by experimental psychology pioneers Atkinson & Shriffin (1968) demonstrated that when humans are presented with information, they tend to remember the first and last elements and are more likely to forget the middle ones.

This is known as the “ serial position effect ” (more technically, the tendency to remember the first elements is known as the “ primacy effect ”, while the tendency to remember the last elements is known as the “ recency effect ”). Further work in human experiences discovered that the last few things we see or hear at the end of an experience can generate the most powerful memories that come back to us when we come across a situation or when we think about it. For example, let’s say you stayed in a hotel room that left a bit to be desired. Maybe the room was a little cramped, or the towels were not so soft. But if the receptionist, as you leave, shakes your hand warmly, smiles and thanks you sincerely for your custom, and goes out of his way to help you with your luggage, or to get you a taxi, you will remember that person’s kind demeanor more than you will remember the fact that the room facilities could be improved.

A good ending to your case study can help people forget some of the not-so-good points about your case study middle. For example, if you missed out a few crucial details but can demonstrate some truly interesting takeaways, they can always just ask you about these in an interview. Inversely, a bad ending leaves the recruiter with some doubt that will linger. Did this person learn nothing interesting from all this work? Did their work have no impact at all? Did they even write the case study themselves? A bad last impression can certainly undo much of the hard work you’ve put into writing the complicated middle part of your case study.

What to put in your case study conclusions

A case study ending is your opportunity to bring some closure to the story that you are writing. So, you can use it to mention the status of the project (e.g., is it ongoing or has it ended?) and then to demonstrate the impact that your work has had. By presenting some quantifiable results (e.g., data from end evaluations, analytics, key performance indicators ), you can demonstrate this impact. You can also discuss what you learned from this project, making you wiser than the next applicant – for example, something about a special category of users that the company might be interested in developing products for, or something that is cutting-edge and that advances the frontiers of science or practice.

As you can see, there are a few good ways in which you can end your case study. Next, we will outline four options that can be part of your ending: lessons learned, the impact of the project, reflections, and acknowledgements.

Lessons learned

A recruiter wants to see how you improve yourself by learning from the projects you work on. You can discuss interesting insights that you learned from user research or the evaluation of your designs – for example, surprising behaviors that you found out about the technology use in a group of users who are not typically considered to be big proponents of technology (e.g., older adults), or, perhaps, the reasons a particular design pattern didn’t work as well as expected under the context of your project.

Another thing you can discuss is your opinion on what the most difficult challenge of the project was, and comment on how you managed to overcome it. You can also discuss here things that you found out about yourself as a professional – for example, that you enjoyed taking on a UX role that you didn’t have previous experience with, or that you were able to overcome some personal limitations or build on your existing skills in a new way.

Impact of the project

Showing impact is always good. How did you measure the impact of your work? By using analytics, evaluation results, and even testimonials from your customers or users, or even your development or marketing team, you can demonstrate that your methodical approach to work brought about some positive change. Use before-after comparison data to demonstrate the extent of your impact. Verbatim positive quotes from your users or other project stakeholders are worth their weight (or rather, sentence length) in gold. Don’t go overboard, but mix and match the best evidence for the quality of your work to keep the end section brief and to the point.

conclusion on importance of case study

Copyright holder: Andreas Komninos, Interaction Design Foundation. Copyright terms and license: CC BY-SA 3.0

User reviews from app stores are a great source of obtaining testimonials to include in your case studies. Overall app ratings and download volumes are also great bits of information to show impact.

conclusion on importance of case study

An excerpt from a case study ending section. Here, text and accompanying charts are used to demonstrate the impact of the work done by the UX professional.

Reflections on your experiences

You can include some information that shows you have a clear understanding of how further work can build on the success of what you’ve already done. This demonstrates forward thinking and exploratory desire. Something else you can reflect on is your choices during the project. In every project, there might be things you could do differently or improve upon. But be aware that the natural question that follows such statements is this: “Well, so why haven’t you done it?”

Don’t shoot yourself in the foot by listing all the things you wish you could have done, but focus on what you’ve actually done and lay out future directions. For example, if you’ve done the user research in an ongoing project, don’t say, “ After all this user research, it would have been great to progress to a prototype, but it’s not yet done ”; instead, say, “ This user research is now enabling developers to quickly progress to the prototyping stage. ”

Acknowledgments

The end of the case study section is where you should put in your acknowledgments to any other members of your team, if this wasn’t a personal project. Your goal by doing so is to highlight your team spirit and humility in recognizing that great projects are most typically the result of collaboration . Be careful here, because it’s easy to make the waters muddy by not being explicit about what YOU did. So, for example, don’t write something like “ I couldn’t have done it without John X. and Jane Y. ”, but instead say this: “ My user research and prototype design fed into the development work carried out by John X. User testing was carried out by Jane Y., whose findings informed further re-design that I did on the prototypes. ”

What is a good length for a UX case study ending?

UX case studies must be kept short, and, when considering the length of your beginning, process and conclusion sections, it’s the beginning and the conclusion sections that should be the shortest of all. In some case studies, you can keep the ending to two or three short phrases. Other, longer case studies about more complex projects may require a slightly longer section.

Remember, though, that the end section is your chance for a last, short but impactful impression. If the hotel receptionist from our early example started to say goodbye and then went on and on to ask you about your experience, sharing with you the comments of other clients, or started talking to you about where you are going next, and why, and maybe if he had been there himself, started to tell you all about where to go and what to see, well… you get the point. Keep it short, sincere and focused. And certainly, don’t try to make the project sound more important than it was. Recruiters are not stupid – they’ve been there and done that, so they know.

Putting it all together

In the example below, we will show how you can address the points above using text. We are going to focus on the three main questions here, so you can see an example of this in action, for a longer case study.

conclusion on importance of case study

An example ending section for a longer case study, addressing all aspects: Lessons, impact, reflection and acknowledgments.

Here is how we might structure the text for a shorter version of the same case study, focusing on the bare essentials:

conclusion on importance of case study

An example ending section for a shorter case study, addressing the most critical aspects: Lessons, impact and reflection. Acknowledgments are being sacrificed for the sake of brevity here, but perhaps that’s OK – you might mention it in the middle part of the case study.

The Take Away

The end part of your case study needs as much care and attention as the rest of it does. You shouldn’t neglect it just because it’s the last thing in the case study. It’s not hard work if you know the basics, and here, we’ve given you the pointers you need to ensure that you don’t miss out anything important. The end part of the case study should leave your recruiters with a good (hopefully, very good) last impression of you and your work, so give it the thorough consideration it needs, to ensure it doesn’t undo all the hard work you’ve put into the case study.

References & Where to Learn More

Copyright holder: Andrew Hurley, Flickr. Copyright terms and license: CC BY-SA 2.0

Atkinson, R. C., & Shiffrin, R. M. (1968). Chapter: Human memory : A proposed system and its control processes. In Spence, K. W., & Spence, J. T. The psychology of learning and motivation (Volume 2). New York: Academic Press. pp. 89–195.

McLeod, S. (2008). Serial Position Effect

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How to Write Effective Case Study Conclusions

Table of Contents

Not many people realize that the conclusion is vital to writing your case study. It should summarize the entire study, clarify all the research points, and focus on a few key takeaways.

There are several ways how to write case study conclusion . And we’re here to guide you with some easy and effective steps.

A good conclusion is interesting and captures the essence of your case. It needs to reflect your information and help the reader adopt your conclusion and act on it. Keep reading to learn how to do just that.

Pencils and smartphone on top of books

Importance of Your Case Study Conclusion

Your conclusion is an opportunity for you to summarize your findings and highlight what this study has taught you.

It should also summarize and draw out the main points you’ve discussed and reinforce the importance of your work. Remember, your last impression needs to be just as good as your first. You want to leave readers with something to think about or act on.

Types of Case Studies

Before we proceed on  how to write case study conclusion , let’s take a brief look at the different types of case studies.

There are different types of case studies depending on how they are structured, what is the target audience, and the research methodology used. And your conclusion may vary depending on the nature of the case study.

Some of the most common case studies are:

  • Historical:  Historical events have a multitude of sources offering different perspectives. These perspectives can be applied, compared, and thoroughly analyzed in the modern world.
  • Problem-oriented:  This type of case study is used for solving problems. You can use theoretical situations where you immerse yourself in a situation. Through this, you can thoroughly examine a problem and find ways to resolve it.
  • Cumulative:  In a cumulative study, you gather information and offer comparisons. An example of this is a business case study that tells people about a product’s value.
  • Critical:  Critical case studies focus on exploring the causes and effects of a particular situation. To do this, you can have varying amounts of research and various interviews.
  • Illustrative:  In this case study, certain events are described, as well as the lessons learned.

How to Write Case Study Conclusion Effectively

Writing your conclusion doesn’t need to be complicated. Follow these steps to help you get started on an effective conclusion.

1. Inform the reader precisely why your case study and your findings are relevant

Your conclusion is where you point out the significance of your study. You can cite a specific case in your work and explain how it applies to other relevant cases.

2. Restate your thesis and your main findings

Remind your readers of the thesis statement you made in your introduction but don’t just copy it directly. Also, make sure to mention your main findings to back up your thesis.

3. Give a summary of previous case studies you reviewed

What did you discover that was different about your case? How was previous research helpful? Include this in your conclusion so readers can understand your work and how it contributes to expanding current knowledge.

4. End with recommendations

Wrap up your paper by explaining how your case study and findings could form part of future research on the topic. You can also express your recommendations by commenting on how certain studies, programs, or policies could be improved.

Make sure everything you write in your conclusion section is convincing enough to tell the reader that your case is an effective solution. And if the purpose of your case is complicated, make sure to sum it up in point form. This will help the reader review the case again before approaching the conclusion.

How Long Should Your Conclusion Be?

The length of your conclusion may vary depending on whether you’re writing a thesis or a dissertation. At least 5-9 percent of your overall word count should be dedicated to your conclusion.

Often, empirical scientific studies have brief conclusions describing the main findings and recommendations for future research. On the other hand, humanities topics or systematic reviews may require more space to conclude their analysis. They will need to integrate all the previous sections into an overall argument.

Wrapping Up

Your conclusion is an opportunity to translate and amplify the information you have put in the body of the paper.

More importantly, it is an opportunity to leave a lasting positive impression . Make the right impression by following these quick steps on  how to write case study conclusion  effectively.

How to Write Effective Case Study Conclusions

Abir Ghenaiet

Abir is a data analyst and researcher. Among her interests are artificial intelligence, machine learning, and natural language processing. As a humanitarian and educator, she actively supports women in tech and promotes diversity.

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How to Successfully Conclude a Case Study

Knowing how to successfully conclude a case study is one of the most important parts of every case interview. A strong conclusion shows how well you summarize the entire case solution into a couple of points. In addition, it proves that you can successfully back up your arguments with both quantitative and qualitative facts. It’s also the very last point of the case, thus the point clients remember the most. 

How to Successfully Conclude a Case Study - Best Practice Approaches 

Take approximately 30 seconds before concluding the case, and use this time to jot down key messages you want to touch on during your recommendation. You want to have your ideas sorted out in advance so that you speak clearly and concisely, covering each point without referring back to your notes. 

Practice the art of the elevator pitch

Ideally, your final recommendation should not exceed more than one minute. It is a way to mimic day-to-day interactions with our clients when we are asked to give them key pointers in a short summary. 

Answer first and answer focused

As you will see more in detail with Prepmatter cases, in many case types, you should start with the answer. However, in certain case types where the client has a business problem yet to be diagnosed (e.g., competitive response strategy, profitability, operations), it’s best to start with your diagnosis and then provide recovery solutions. 

Allocate time correctly

Make sure to allocate most of your time to the delivery of a solution and its supporting evidence. Some candidates spend half - if not more - of their time in delivering risks and next steps, which dilutes the key messages in the recommendation. Conclude the case in the following structure: 

  • Recommendation: Give a one-sentence action-oriented recommendation. 
  • First supporting fact with figures (quantitative) 
  • Second supporting fact with figures (quantitative)
  • Third supporting fact (qualitative)
  • Risks: Comment on the potential risks assessed during the case. Try to mention them in a way supporting your conclusion. 
  • Next steps: Provide direction on how they should act going forward based on the recommendation.

Example of a Strong Conclusion

  • I suggest the client should go ahead with this investment and enter the cosmetics market with their new product.
  • With this investment, the client can make an $800M profit over the next three years, which is higher than our objective of $600M. 
  • The cosmetics market is expected to grow at a 9% annual growth rate over the next 10 years, promising sustainable value in the long term. 
  • We can create synergies by combining our back-end operations with our existing business. 
  • Risks: There is a regulatory risk given that the authorities increase their health restrictions related to cosmetics products. The client should make sure that they spend additional effort to comply with all regulations. 
  • Next steps: As the next step, I suggest the client design a detailed production plan for the new product. 

How to Practice Case Conclusions

There are various ways to practice concluding a case. Practice with the Prepmatter cases or any other case you may have. You can change the numbers in the case to create hypothetical facts and draw a new conclusion. By doing so, you can also change the recommendation if the numbers change significantly. For instance, if you change the 3-year profits to $400M from $800M in the example above, the recommendation would change from ‘Go’ to ‘No-go’. 

Knowing how to successfully conclude a case study is a critical part of each case interview, so we recommend you set aside specific time to review it with your coach or case partner. Take time to solve as many cases as possible to improve how well you summarize, support, and present your conclusion.

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What the Case Study Method Really Teaches

  • Nitin Nohria

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Seven meta-skills that stick even if the cases fade from memory.

It’s been 100 years since Harvard Business School began using the case study method. Beyond teaching specific subject matter, the case study method excels in instilling meta-skills in students. This article explains the importance of seven such skills: preparation, discernment, bias recognition, judgement, collaboration, curiosity, and self-confidence.

During my decade as dean of Harvard Business School, I spent hundreds of hours talking with our alumni. To enliven these conversations, I relied on a favorite question: “What was the most important thing you learned from your time in our MBA program?”

  • Nitin Nohria is the George F. Baker Jr. and Distinguished Service University Professor. He served as the 10th dean of Harvard Business School, from 2010 to 2020.

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  • Case Study | Definition, Examples & Methods

Case Study | Definition, Examples & Methods

Published on 5 May 2022 by Shona McCombes . Revised on 30 January 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organisation, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.

A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating, and understanding different aspects of a research problem .

Table of contents

When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyse the case.

A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.

Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.

You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.

Prevent plagiarism, run a free check.

Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:

  • Provide new or unexpected insights into the subject
  • Challenge or complicate existing assumptions and theories
  • Propose practical courses of action to resolve a problem
  • Open up new directions for future research

Unlike quantitative or experimental research, a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.

If you find yourself aiming to simultaneously investigate and solve an issue, consider conducting action research . As its name suggests, action research conducts research and takes action at the same time, and is highly iterative and flexible. 

However, you can also choose a more common or representative case to exemplify a particular category, experience, or phenomenon.

While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:

  • Exemplify a theory by showing how it explains the case under investigation
  • Expand on a theory by uncovering new concepts and ideas that need to be incorporated
  • Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions

To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.

There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews, observations, and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data .

The aim is to gain as thorough an understanding as possible of the case and its context.

In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.

How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis, with separate sections or chapters for the methods , results , and discussion .

Others are written in a more narrative style, aiming to explore the case from various angles and analyse its meanings and implications (for example, by using textual analysis or discourse analysis ).

In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.

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The Ultimate Guide to Qualitative Research - Part 1: The Basics

conclusion on importance of case study

  • Introduction and overview
  • What is qualitative research?
  • What is qualitative data?
  • Examples of qualitative data
  • Qualitative vs. quantitative research
  • Mixed methods
  • Qualitative research preparation
  • Theoretical perspective
  • Theoretical framework
  • Literature reviews

Research question

  • Conceptual framework
  • Conceptual vs. theoretical framework

Data collection

  • Qualitative research methods
  • Focus groups
  • Observational research

What is a case study?

Applications for case study research, what is a good case study, process of case study design, benefits and limitations of case studies.

  • Ethnographical research
  • Ethical considerations
  • Confidentiality and privacy
  • Power dynamics
  • Reflexivity

Case studies

Case studies are essential to qualitative research , offering a lens through which researchers can investigate complex phenomena within their real-life contexts. This chapter explores the concept, purpose, applications, examples, and types of case studies and provides guidance on how to conduct case study research effectively.

conclusion on importance of case study

Whereas quantitative methods look at phenomena at scale, case study research looks at a concept or phenomenon in considerable detail. While analyzing a single case can help understand one perspective regarding the object of research inquiry, analyzing multiple cases can help obtain a more holistic sense of the topic or issue. Let's provide a basic definition of a case study, then explore its characteristics and role in the qualitative research process.

Definition of a case study

A case study in qualitative research is a strategy of inquiry that involves an in-depth investigation of a phenomenon within its real-world context. It provides researchers with the opportunity to acquire an in-depth understanding of intricate details that might not be as apparent or accessible through other methods of research. The specific case or cases being studied can be a single person, group, or organization – demarcating what constitutes a relevant case worth studying depends on the researcher and their research question .

Among qualitative research methods , a case study relies on multiple sources of evidence, such as documents, artifacts, interviews , or observations , to present a complete and nuanced understanding of the phenomenon under investigation. The objective is to illuminate the readers' understanding of the phenomenon beyond its abstract statistical or theoretical explanations.

Characteristics of case studies

Case studies typically possess a number of distinct characteristics that set them apart from other research methods. These characteristics include a focus on holistic description and explanation, flexibility in the design and data collection methods, reliance on multiple sources of evidence, and emphasis on the context in which the phenomenon occurs.

Furthermore, case studies can often involve a longitudinal examination of the case, meaning they study the case over a period of time. These characteristics allow case studies to yield comprehensive, in-depth, and richly contextualized insights about the phenomenon of interest.

The role of case studies in research

Case studies hold a unique position in the broader landscape of research methods aimed at theory development. They are instrumental when the primary research interest is to gain an intensive, detailed understanding of a phenomenon in its real-life context.

In addition, case studies can serve different purposes within research - they can be used for exploratory, descriptive, or explanatory purposes, depending on the research question and objectives. This flexibility and depth make case studies a valuable tool in the toolkit of qualitative researchers.

Remember, a well-conducted case study can offer a rich, insightful contribution to both academic and practical knowledge through theory development or theory verification, thus enhancing our understanding of complex phenomena in their real-world contexts.

What is the purpose of a case study?

Case study research aims for a more comprehensive understanding of phenomena, requiring various research methods to gather information for qualitative analysis . Ultimately, a case study can allow the researcher to gain insight into a particular object of inquiry and develop a theoretical framework relevant to the research inquiry.

Why use case studies in qualitative research?

Using case studies as a research strategy depends mainly on the nature of the research question and the researcher's access to the data.

Conducting case study research provides a level of detail and contextual richness that other research methods might not offer. They are beneficial when there's a need to understand complex social phenomena within their natural contexts.

The explanatory, exploratory, and descriptive roles of case studies

Case studies can take on various roles depending on the research objectives. They can be exploratory when the research aims to discover new phenomena or define new research questions; they are descriptive when the objective is to depict a phenomenon within its context in a detailed manner; and they can be explanatory if the goal is to understand specific relationships within the studied context. Thus, the versatility of case studies allows researchers to approach their topic from different angles, offering multiple ways to uncover and interpret the data .

The impact of case studies on knowledge development

Case studies play a significant role in knowledge development across various disciplines. Analysis of cases provides an avenue for researchers to explore phenomena within their context based on the collected data.

conclusion on importance of case study

This can result in the production of rich, practical insights that can be instrumental in both theory-building and practice. Case studies allow researchers to delve into the intricacies and complexities of real-life situations, uncovering insights that might otherwise remain hidden.

Types of case studies

In qualitative research , a case study is not a one-size-fits-all approach. Depending on the nature of the research question and the specific objectives of the study, researchers might choose to use different types of case studies. These types differ in their focus, methodology, and the level of detail they provide about the phenomenon under investigation.

Understanding these types is crucial for selecting the most appropriate approach for your research project and effectively achieving your research goals. Let's briefly look at the main types of case studies.

Exploratory case studies

Exploratory case studies are typically conducted to develop a theory or framework around an understudied phenomenon. They can also serve as a precursor to a larger-scale research project. Exploratory case studies are useful when a researcher wants to identify the key issues or questions which can spur more extensive study or be used to develop propositions for further research. These case studies are characterized by flexibility, allowing researchers to explore various aspects of a phenomenon as they emerge, which can also form the foundation for subsequent studies.

Descriptive case studies

Descriptive case studies aim to provide a complete and accurate representation of a phenomenon or event within its context. These case studies are often based on an established theoretical framework, which guides how data is collected and analyzed. The researcher is concerned with describing the phenomenon in detail, as it occurs naturally, without trying to influence or manipulate it.

Explanatory case studies

Explanatory case studies are focused on explanation - they seek to clarify how or why certain phenomena occur. Often used in complex, real-life situations, they can be particularly valuable in clarifying causal relationships among concepts and understanding the interplay between different factors within a specific context.

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Intrinsic, instrumental, and collective case studies

These three categories of case studies focus on the nature and purpose of the study. An intrinsic case study is conducted when a researcher has an inherent interest in the case itself. Instrumental case studies are employed when the case is used to provide insight into a particular issue or phenomenon. A collective case study, on the other hand, involves studying multiple cases simultaneously to investigate some general phenomena.

Each type of case study serves a different purpose and has its own strengths and challenges. The selection of the type should be guided by the research question and objectives, as well as the context and constraints of the research.

The flexibility, depth, and contextual richness offered by case studies make this approach an excellent research method for various fields of study. They enable researchers to investigate real-world phenomena within their specific contexts, capturing nuances that other research methods might miss. Across numerous fields, case studies provide valuable insights into complex issues.

Critical information systems research

Case studies provide a detailed understanding of the role and impact of information systems in different contexts. They offer a platform to explore how information systems are designed, implemented, and used and how they interact with various social, economic, and political factors. Case studies in this field often focus on examining the intricate relationship between technology, organizational processes, and user behavior, helping to uncover insights that can inform better system design and implementation.

Health research

Health research is another field where case studies are highly valuable. They offer a way to explore patient experiences, healthcare delivery processes, and the impact of various interventions in a real-world context.

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Case studies can provide a deep understanding of a patient's journey, giving insights into the intricacies of disease progression, treatment effects, and the psychosocial aspects of health and illness.

Asthma research studies

Specifically within medical research, studies on asthma often employ case studies to explore the individual and environmental factors that influence asthma development, management, and outcomes. A case study can provide rich, detailed data about individual patients' experiences, from the triggers and symptoms they experience to the effectiveness of various management strategies. This can be crucial for developing patient-centered asthma care approaches.

Other fields

Apart from the fields mentioned, case studies are also extensively used in business and management research, education research, and political sciences, among many others. They provide an opportunity to delve into the intricacies of real-world situations, allowing for a comprehensive understanding of various phenomena.

Case studies, with their depth and contextual focus, offer unique insights across these varied fields. They allow researchers to illuminate the complexities of real-life situations, contributing to both theory and practice.

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Understanding the key elements of case study design is crucial for conducting rigorous and impactful case study research. A well-structured design guides the researcher through the process, ensuring that the study is methodologically sound and its findings are reliable and valid. The main elements of case study design include the research question , propositions, units of analysis, and the logic linking the data to the propositions.

The research question is the foundation of any research study. A good research question guides the direction of the study and informs the selection of the case, the methods of collecting data, and the analysis techniques. A well-formulated research question in case study research is typically clear, focused, and complex enough to merit further detailed examination of the relevant case(s).

Propositions

Propositions, though not necessary in every case study, provide a direction by stating what we might expect to find in the data collected. They guide how data is collected and analyzed by helping researchers focus on specific aspects of the case. They are particularly important in explanatory case studies, which seek to understand the relationships among concepts within the studied phenomenon.

Units of analysis

The unit of analysis refers to the case, or the main entity or entities that are being analyzed in the study. In case study research, the unit of analysis can be an individual, a group, an organization, a decision, an event, or even a time period. It's crucial to clearly define the unit of analysis, as it shapes the qualitative data analysis process by allowing the researcher to analyze a particular case and synthesize analysis across multiple case studies to draw conclusions.

Argumentation

This refers to the inferential model that allows researchers to draw conclusions from the data. The researcher needs to ensure that there is a clear link between the data, the propositions (if any), and the conclusions drawn. This argumentation is what enables the researcher to make valid and credible inferences about the phenomenon under study.

Understanding and carefully considering these elements in the design phase of a case study can significantly enhance the quality of the research. It can help ensure that the study is methodologically sound and its findings contribute meaningful insights about the case.

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Conducting a case study involves several steps, from defining the research question and selecting the case to collecting and analyzing data . This section outlines these key stages, providing a practical guide on how to conduct case study research.

Defining the research question

The first step in case study research is defining a clear, focused research question. This question should guide the entire research process, from case selection to analysis. It's crucial to ensure that the research question is suitable for a case study approach. Typically, such questions are exploratory or descriptive in nature and focus on understanding a phenomenon within its real-life context.

Selecting and defining the case

The selection of the case should be based on the research question and the objectives of the study. It involves choosing a unique example or a set of examples that provide rich, in-depth data about the phenomenon under investigation. After selecting the case, it's crucial to define it clearly, setting the boundaries of the case, including the time period and the specific context.

Previous research can help guide the case study design. When considering a case study, an example of a case could be taken from previous case study research and used to define cases in a new research inquiry. Considering recently published examples can help understand how to select and define cases effectively.

Developing a detailed case study protocol

A case study protocol outlines the procedures and general rules to be followed during the case study. This includes the data collection methods to be used, the sources of data, and the procedures for analysis. Having a detailed case study protocol ensures consistency and reliability in the study.

The protocol should also consider how to work with the people involved in the research context to grant the research team access to collecting data. As mentioned in previous sections of this guide, establishing rapport is an essential component of qualitative research as it shapes the overall potential for collecting and analyzing data.

Collecting data

Gathering data in case study research often involves multiple sources of evidence, including documents, archival records, interviews, observations, and physical artifacts. This allows for a comprehensive understanding of the case. The process for gathering data should be systematic and carefully documented to ensure the reliability and validity of the study.

Analyzing and interpreting data

The next step is analyzing the data. This involves organizing the data , categorizing it into themes or patterns , and interpreting these patterns to answer the research question. The analysis might also involve comparing the findings with prior research or theoretical propositions.

Writing the case study report

The final step is writing the case study report . This should provide a detailed description of the case, the data, the analysis process, and the findings. The report should be clear, organized, and carefully written to ensure that the reader can understand the case and the conclusions drawn from it.

Each of these steps is crucial in ensuring that the case study research is rigorous, reliable, and provides valuable insights about the case.

The type, depth, and quality of data in your study can significantly influence the validity and utility of the study. In case study research, data is usually collected from multiple sources to provide a comprehensive and nuanced understanding of the case. This section will outline the various methods of collecting data used in case study research and discuss considerations for ensuring the quality of the data.

Interviews are a common method of gathering data in case study research. They can provide rich, in-depth data about the perspectives, experiences, and interpretations of the individuals involved in the case. Interviews can be structured , semi-structured , or unstructured , depending on the research question and the degree of flexibility needed.

Observations

Observations involve the researcher observing the case in its natural setting, providing first-hand information about the case and its context. Observations can provide data that might not be revealed in interviews or documents, such as non-verbal cues or contextual information.

Documents and artifacts

Documents and archival records provide a valuable source of data in case study research. They can include reports, letters, memos, meeting minutes, email correspondence, and various public and private documents related to the case.

conclusion on importance of case study

These records can provide historical context, corroborate evidence from other sources, and offer insights into the case that might not be apparent from interviews or observations.

Physical artifacts refer to any physical evidence related to the case, such as tools, products, or physical environments. These artifacts can provide tangible insights into the case, complementing the data gathered from other sources.

Ensuring the quality of data collection

Determining the quality of data in case study research requires careful planning and execution. It's crucial to ensure that the data is reliable, accurate, and relevant to the research question. This involves selecting appropriate methods of collecting data, properly training interviewers or observers, and systematically recording and storing the data. It also includes considering ethical issues related to collecting and handling data, such as obtaining informed consent and ensuring the privacy and confidentiality of the participants.

Data analysis

Analyzing case study research involves making sense of the rich, detailed data to answer the research question. This process can be challenging due to the volume and complexity of case study data. However, a systematic and rigorous approach to analysis can ensure that the findings are credible and meaningful. This section outlines the main steps and considerations in analyzing data in case study research.

Organizing the data

The first step in the analysis is organizing the data. This involves sorting the data into manageable sections, often according to the data source or the theme. This step can also involve transcribing interviews, digitizing physical artifacts, or organizing observational data.

Categorizing and coding the data

Once the data is organized, the next step is to categorize or code the data. This involves identifying common themes, patterns, or concepts in the data and assigning codes to relevant data segments. Coding can be done manually or with the help of software tools, and in either case, qualitative analysis software can greatly facilitate the entire coding process. Coding helps to reduce the data to a set of themes or categories that can be more easily analyzed.

Identifying patterns and themes

After coding the data, the researcher looks for patterns or themes in the coded data. This involves comparing and contrasting the codes and looking for relationships or patterns among them. The identified patterns and themes should help answer the research question.

Interpreting the data

Once patterns and themes have been identified, the next step is to interpret these findings. This involves explaining what the patterns or themes mean in the context of the research question and the case. This interpretation should be grounded in the data, but it can also involve drawing on theoretical concepts or prior research.

Verification of the data

The last step in the analysis is verification. This involves checking the accuracy and consistency of the analysis process and confirming that the findings are supported by the data. This can involve re-checking the original data, checking the consistency of codes, or seeking feedback from research participants or peers.

Like any research method , case study research has its strengths and limitations. Researchers must be aware of these, as they can influence the design, conduct, and interpretation of the study.

Understanding the strengths and limitations of case study research can also guide researchers in deciding whether this approach is suitable for their research question . This section outlines some of the key strengths and limitations of case study research.

Benefits include the following:

  • Rich, detailed data: One of the main strengths of case study research is that it can generate rich, detailed data about the case. This can provide a deep understanding of the case and its context, which can be valuable in exploring complex phenomena.
  • Flexibility: Case study research is flexible in terms of design , data collection , and analysis . A sufficient degree of flexibility allows the researcher to adapt the study according to the case and the emerging findings.
  • Real-world context: Case study research involves studying the case in its real-world context, which can provide valuable insights into the interplay between the case and its context.
  • Multiple sources of evidence: Case study research often involves collecting data from multiple sources , which can enhance the robustness and validity of the findings.

On the other hand, researchers should consider the following limitations:

  • Generalizability: A common criticism of case study research is that its findings might not be generalizable to other cases due to the specificity and uniqueness of each case.
  • Time and resource intensive: Case study research can be time and resource intensive due to the depth of the investigation and the amount of collected data.
  • Complexity of analysis: The rich, detailed data generated in case study research can make analyzing the data challenging.
  • Subjectivity: Given the nature of case study research, there may be a higher degree of subjectivity in interpreting the data , so researchers need to reflect on this and transparently convey to audiences how the research was conducted.

Being aware of these strengths and limitations can help researchers design and conduct case study research effectively and interpret and report the findings appropriately.

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What Is a Case Study?

Weighing the pros and cons of this method of research

Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

conclusion on importance of case study

Cara Lustik is a fact-checker and copywriter.

conclusion on importance of case study

Verywell / Colleen Tighe

  • Pros and Cons

What Types of Case Studies Are Out There?

Where do you find data for a case study, how do i write a psychology case study.

A case study is an in-depth study of one person, group, or event. In a case study, nearly every aspect of the subject's life and history is analyzed to seek patterns and causes of behavior. Case studies can be used in many different fields, including psychology, medicine, education, anthropology, political science, and social work.

The point of a case study is to learn as much as possible about an individual or group so that the information can be generalized to many others. Unfortunately, case studies tend to be highly subjective, and it is sometimes difficult to generalize results to a larger population.

While case studies focus on a single individual or group, they follow a format similar to other types of psychology writing. If you are writing a case study, we got you—here are some rules of APA format to reference.  

At a Glance

A case study, or an in-depth study of a person, group, or event, can be a useful research tool when used wisely. In many cases, case studies are best used in situations where it would be difficult or impossible for you to conduct an experiment. They are helpful for looking at unique situations and allow researchers to gather a lot of˜ information about a specific individual or group of people. However, it's important to be cautious of any bias we draw from them as they are highly subjective.

What Are the Benefits and Limitations of Case Studies?

A case study can have its strengths and weaknesses. Researchers must consider these pros and cons before deciding if this type of study is appropriate for their needs.

One of the greatest advantages of a case study is that it allows researchers to investigate things that are often difficult or impossible to replicate in a lab. Some other benefits of a case study:

  • Allows researchers to capture information on the 'how,' 'what,' and 'why,' of something that's implemented
  • Gives researchers the chance to collect information on why one strategy might be chosen over another
  • Permits researchers to develop hypotheses that can be explored in experimental research

On the other hand, a case study can have some drawbacks:

  • It cannot necessarily be generalized to the larger population
  • Cannot demonstrate cause and effect
  • It may not be scientifically rigorous
  • It can lead to bias

Researchers may choose to perform a case study if they want to explore a unique or recently discovered phenomenon. Through their insights, researchers develop additional ideas and study questions that might be explored in future studies.

It's important to remember that the insights from case studies cannot be used to determine cause-and-effect relationships between variables. However, case studies may be used to develop hypotheses that can then be addressed in experimental research.

Case Study Examples

There have been a number of notable case studies in the history of psychology. Much of  Freud's work and theories were developed through individual case studies. Some great examples of case studies in psychology include:

  • Anna O : Anna O. was a pseudonym of a woman named Bertha Pappenheim, a patient of a physician named Josef Breuer. While she was never a patient of Freud's, Freud and Breuer discussed her case extensively. The woman was experiencing symptoms of a condition that was then known as hysteria and found that talking about her problems helped relieve her symptoms. Her case played an important part in the development of talk therapy as an approach to mental health treatment.
  • Phineas Gage : Phineas Gage was a railroad employee who experienced a terrible accident in which an explosion sent a metal rod through his skull, damaging important portions of his brain. Gage recovered from his accident but was left with serious changes in both personality and behavior.
  • Genie : Genie was a young girl subjected to horrific abuse and isolation. The case study of Genie allowed researchers to study whether language learning was possible, even after missing critical periods for language development. Her case also served as an example of how scientific research may interfere with treatment and lead to further abuse of vulnerable individuals.

Such cases demonstrate how case research can be used to study things that researchers could not replicate in experimental settings. In Genie's case, her horrific abuse denied her the opportunity to learn a language at critical points in her development.

This is clearly not something researchers could ethically replicate, but conducting a case study on Genie allowed researchers to study phenomena that are otherwise impossible to reproduce.

There are a few different types of case studies that psychologists and other researchers might use:

  • Collective case studies : These involve studying a group of individuals. Researchers might study a group of people in a certain setting or look at an entire community. For example, psychologists might explore how access to resources in a community has affected the collective mental well-being of those who live there.
  • Descriptive case studies : These involve starting with a descriptive theory. The subjects are then observed, and the information gathered is compared to the pre-existing theory.
  • Explanatory case studies : These   are often used to do causal investigations. In other words, researchers are interested in looking at factors that may have caused certain things to occur.
  • Exploratory case studies : These are sometimes used as a prelude to further, more in-depth research. This allows researchers to gather more information before developing their research questions and hypotheses .
  • Instrumental case studies : These occur when the individual or group allows researchers to understand more than what is initially obvious to observers.
  • Intrinsic case studies : This type of case study is when the researcher has a personal interest in the case. Jean Piaget's observations of his own children are good examples of how an intrinsic case study can contribute to the development of a psychological theory.

The three main case study types often used are intrinsic, instrumental, and collective. Intrinsic case studies are useful for learning about unique cases. Instrumental case studies help look at an individual to learn more about a broader issue. A collective case study can be useful for looking at several cases simultaneously.

The type of case study that psychology researchers use depends on the unique characteristics of the situation and the case itself.

There are a number of different sources and methods that researchers can use to gather information about an individual or group. Six major sources that have been identified by researchers are:

  • Archival records : Census records, survey records, and name lists are examples of archival records.
  • Direct observation : This strategy involves observing the subject, often in a natural setting . While an individual observer is sometimes used, it is more common to utilize a group of observers.
  • Documents : Letters, newspaper articles, administrative records, etc., are the types of documents often used as sources.
  • Interviews : Interviews are one of the most important methods for gathering information in case studies. An interview can involve structured survey questions or more open-ended questions.
  • Participant observation : When the researcher serves as a participant in events and observes the actions and outcomes, it is called participant observation.
  • Physical artifacts : Tools, objects, instruments, and other artifacts are often observed during a direct observation of the subject.

If you have been directed to write a case study for a psychology course, be sure to check with your instructor for any specific guidelines you need to follow. If you are writing your case study for a professional publication, check with the publisher for their specific guidelines for submitting a case study.

Here is a general outline of what should be included in a case study.

Section 1: A Case History

This section will have the following structure and content:

Background information : The first section of your paper will present your client's background. Include factors such as age, gender, work, health status, family mental health history, family and social relationships, drug and alcohol history, life difficulties, goals, and coping skills and weaknesses.

Description of the presenting problem : In the next section of your case study, you will describe the problem or symptoms that the client presented with.

Describe any physical, emotional, or sensory symptoms reported by the client. Thoughts, feelings, and perceptions related to the symptoms should also be noted. Any screening or diagnostic assessments that are used should also be described in detail and all scores reported.

Your diagnosis : Provide your diagnosis and give the appropriate Diagnostic and Statistical Manual code. Explain how you reached your diagnosis, how the client's symptoms fit the diagnostic criteria for the disorder(s), or any possible difficulties in reaching a diagnosis.

Section 2: Treatment Plan

This portion of the paper will address the chosen treatment for the condition. This might also include the theoretical basis for the chosen treatment or any other evidence that might exist to support why this approach was chosen.

  • Cognitive behavioral approach : Explain how a cognitive behavioral therapist would approach treatment. Offer background information on cognitive behavioral therapy and describe the treatment sessions, client response, and outcome of this type of treatment. Make note of any difficulties or successes encountered by your client during treatment.
  • Humanistic approach : Describe a humanistic approach that could be used to treat your client, such as client-centered therapy . Provide information on the type of treatment you chose, the client's reaction to the treatment, and the end result of this approach. Explain why the treatment was successful or unsuccessful.
  • Psychoanalytic approach : Describe how a psychoanalytic therapist would view the client's problem. Provide some background on the psychoanalytic approach and cite relevant references. Explain how psychoanalytic therapy would be used to treat the client, how the client would respond to therapy, and the effectiveness of this treatment approach.
  • Pharmacological approach : If treatment primarily involves the use of medications, explain which medications were used and why. Provide background on the effectiveness of these medications and how monotherapy may compare with an approach that combines medications with therapy or other treatments.

This section of a case study should also include information about the treatment goals, process, and outcomes.

When you are writing a case study, you should also include a section where you discuss the case study itself, including the strengths and limitiations of the study. You should note how the findings of your case study might support previous research. 

In your discussion section, you should also describe some of the implications of your case study. What ideas or findings might require further exploration? How might researchers go about exploring some of these questions in additional studies?

Need More Tips?

Here are a few additional pointers to keep in mind when formatting your case study:

  • Never refer to the subject of your case study as "the client." Instead, use their name or a pseudonym.
  • Read examples of case studies to gain an idea about the style and format.
  • Remember to use APA format when citing references .

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach .  BMC Med Res Methodol . 2011;11:100.

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach . BMC Med Res Methodol . 2011 Jun 27;11:100. doi:10.1186/1471-2288-11-100

Gagnon, Yves-Chantal.  The Case Study as Research Method: A Practical Handbook . Canada, Chicago Review Press Incorporated DBA Independent Pub Group, 2010.

Yin, Robert K. Case Study Research and Applications: Design and Methods . United States, SAGE Publications, 2017.

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

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  • How to Write Discussions and Conclusions

How to Write Discussions and Conclusions

The discussion section contains the results and outcomes of a study. An effective discussion informs readers what can be learned from your experiment and provides context for the results.

What makes an effective discussion?

When you’re ready to write your discussion, you’ve already introduced the purpose of your study and provided an in-depth description of the methodology. The discussion informs readers about the larger implications of your study based on the results. Highlighting these implications while not overstating the findings can be challenging, especially when you’re submitting to a journal that selects articles based on novelty or potential impact. Regardless of what journal you are submitting to, the discussion section always serves the same purpose: concluding what your study results actually mean.

A successful discussion section puts your findings in context. It should include:

  • the results of your research,
  • a discussion of related research, and
  • a comparison between your results and initial hypothesis.

Tip: Not all journals share the same naming conventions.

You can apply the advice in this article to the conclusion, results or discussion sections of your manuscript.

Our Early Career Researcher community tells us that the conclusion is often considered the most difficult aspect of a manuscript to write. To help, this guide provides questions to ask yourself, a basic structure to model your discussion off of and examples from published manuscripts. 

conclusion on importance of case study

Questions to ask yourself:

  • Was my hypothesis correct?
  • If my hypothesis is partially correct or entirely different, what can be learned from the results? 
  • How do the conclusions reshape or add onto the existing knowledge in the field? What does previous research say about the topic? 
  • Why are the results important or relevant to your audience? Do they add further evidence to a scientific consensus or disprove prior studies? 
  • How can future research build on these observations? What are the key experiments that must be done? 
  • What is the “take-home” message you want your reader to leave with?

How to structure a discussion

Trying to fit a complete discussion into a single paragraph can add unnecessary stress to the writing process. If possible, you’ll want to give yourself two or three paragraphs to give the reader a comprehensive understanding of your study as a whole. Here’s one way to structure an effective discussion:

conclusion on importance of case study

Writing Tips

While the above sections can help you brainstorm and structure your discussion, there are many common mistakes that writers revert to when having difficulties with their paper. Writing a discussion can be a delicate balance between summarizing your results, providing proper context for your research and avoiding introducing new information. Remember that your paper should be both confident and honest about the results! 

What to do

  • Read the journal’s guidelines on the discussion and conclusion sections. If possible, learn about the guidelines before writing the discussion to ensure you’re writing to meet their expectations. 
  • Begin with a clear statement of the principal findings. This will reinforce the main take-away for the reader and set up the rest of the discussion. 
  • Explain why the outcomes of your study are important to the reader. Discuss the implications of your findings realistically based on previous literature, highlighting both the strengths and limitations of the research. 
  • State whether the results prove or disprove your hypothesis. If your hypothesis was disproved, what might be the reasons? 
  • Introduce new or expanded ways to think about the research question. Indicate what next steps can be taken to further pursue any unresolved questions. 
  • If dealing with a contemporary or ongoing problem, such as climate change, discuss possible consequences if the problem is avoided. 
  • Be concise. Adding unnecessary detail can distract from the main findings. 

What not to do

Don’t

  • Rewrite your abstract. Statements with “we investigated” or “we studied” generally do not belong in the discussion. 
  • Include new arguments or evidence not previously discussed. Necessary information and evidence should be introduced in the main body of the paper. 
  • Apologize. Even if your research contains significant limitations, don’t undermine your authority by including statements that doubt your methodology or execution. 
  • Shy away from speaking on limitations or negative results. Including limitations and negative results will give readers a complete understanding of the presented research. Potential limitations include sources of potential bias, threats to internal or external validity, barriers to implementing an intervention and other issues inherent to the study design. 
  • Overstate the importance of your findings. Making grand statements about how a study will fully resolve large questions can lead readers to doubt the success of the research. 

Snippets of Effective Discussions:

Consumer-based actions to reduce plastic pollution in rivers: A multi-criteria decision analysis approach

Identifying reliable indicators of fitness in polar bears

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Case Study Research Method in Psychology

Saul Mcleod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul Mcleod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

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Olivia Guy-Evans, MSc

Associate Editor for Simply Psychology

BSc (Hons) Psychology, MSc Psychology of Education

Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

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Case studies are in-depth investigations of a person, group, event, or community. Typically, data is gathered from various sources using several methods (e.g., observations & interviews).

The case study research method originated in clinical medicine (the case history, i.e., the patient’s personal history). In psychology, case studies are often confined to the study of a particular individual.

The information is mainly biographical and relates to events in the individual’s past (i.e., retrospective), as well as to significant events that are currently occurring in his or her everyday life.

The case study is not a research method, but researchers select methods of data collection and analysis that will generate material suitable for case studies.

Freud (1909a, 1909b) conducted very detailed investigations into the private lives of his patients in an attempt to both understand and help them overcome their illnesses.

This makes it clear that the case study is a method that should only be used by a psychologist, therapist, or psychiatrist, i.e., someone with a professional qualification.

There is an ethical issue of competence. Only someone qualified to diagnose and treat a person can conduct a formal case study relating to atypical (i.e., abnormal) behavior or atypical development.

case study

 Famous Case Studies

  • Anna O – One of the most famous case studies, documenting psychoanalyst Josef Breuer’s treatment of “Anna O” (real name Bertha Pappenheim) for hysteria in the late 1800s using early psychoanalytic theory.
  • Little Hans – A child psychoanalysis case study published by Sigmund Freud in 1909 analyzing his five-year-old patient Herbert Graf’s house phobia as related to the Oedipus complex.
  • Bruce/Brenda – Gender identity case of the boy (Bruce) whose botched circumcision led psychologist John Money to advise gender reassignment and raise him as a girl (Brenda) in the 1960s.
  • Genie Wiley – Linguistics/psychological development case of the victim of extreme isolation abuse who was studied in 1970s California for effects of early language deprivation on acquiring speech later in life.
  • Phineas Gage – One of the most famous neuropsychology case studies analyzes personality changes in railroad worker Phineas Gage after an 1848 brain injury involving a tamping iron piercing his skull.

Clinical Case Studies

  • Studying the effectiveness of psychotherapy approaches with an individual patient
  • Assessing and treating mental illnesses like depression, anxiety disorders, PTSD
  • Neuropsychological cases investigating brain injuries or disorders

Child Psychology Case Studies

  • Studying psychological development from birth through adolescence
  • Cases of learning disabilities, autism spectrum disorders, ADHD
  • Effects of trauma, abuse, deprivation on development

Types of Case Studies

  • Explanatory case studies : Used to explore causation in order to find underlying principles. Helpful for doing qualitative analysis to explain presumed causal links.
  • Exploratory case studies : Used to explore situations where an intervention being evaluated has no clear set of outcomes. It helps define questions and hypotheses for future research.
  • Descriptive case studies : Describe an intervention or phenomenon and the real-life context in which it occurred. It is helpful for illustrating certain topics within an evaluation.
  • Multiple-case studies : Used to explore differences between cases and replicate findings across cases. Helpful for comparing and contrasting specific cases.
  • Intrinsic : Used to gain a better understanding of a particular case. Helpful for capturing the complexity of a single case.
  • Collective : Used to explore a general phenomenon using multiple case studies. Helpful for jointly studying a group of cases in order to inquire into the phenomenon.

Where Do You Find Data for a Case Study?

There are several places to find data for a case study. The key is to gather data from multiple sources to get a complete picture of the case and corroborate facts or findings through triangulation of evidence. Most of this information is likely qualitative (i.e., verbal description rather than measurement), but the psychologist might also collect numerical data.

1. Primary sources

  • Interviews – Interviewing key people related to the case to get their perspectives and insights. The interview is an extremely effective procedure for obtaining information about an individual, and it may be used to collect comments from the person’s friends, parents, employer, workmates, and others who have a good knowledge of the person, as well as to obtain facts from the person him or herself.
  • Observations – Observing behaviors, interactions, processes, etc., related to the case as they unfold in real-time.
  • Documents & Records – Reviewing private documents, diaries, public records, correspondence, meeting minutes, etc., relevant to the case.

2. Secondary sources

  • News/Media – News coverage of events related to the case study.
  • Academic articles – Journal articles, dissertations etc. that discuss the case.
  • Government reports – Official data and records related to the case context.
  • Books/films – Books, documentaries or films discussing the case.

3. Archival records

Searching historical archives, museum collections and databases to find relevant documents, visual/audio records related to the case history and context.

Public archives like newspapers, organizational records, photographic collections could all include potentially relevant pieces of information to shed light on attitudes, cultural perspectives, common practices and historical contexts related to psychology.

4. Organizational records

Organizational records offer the advantage of often having large datasets collected over time that can reveal or confirm psychological insights.

Of course, privacy and ethical concerns regarding confidential data must be navigated carefully.

However, with proper protocols, organizational records can provide invaluable context and empirical depth to qualitative case studies exploring the intersection of psychology and organizations.

  • Organizational/industrial psychology research : Organizational records like employee surveys, turnover/retention data, policies, incident reports etc. may provide insight into topics like job satisfaction, workplace culture and dynamics, leadership issues, employee behaviors etc.
  • Clinical psychology : Therapists/hospitals may grant access to anonymized medical records to study aspects like assessments, diagnoses, treatment plans etc. This could shed light on clinical practices.
  • School psychology : Studies could utilize anonymized student records like test scores, grades, disciplinary issues, and counseling referrals to study child development, learning barriers, effectiveness of support programs, and more.

How do I Write a Case Study in Psychology?

Follow specified case study guidelines provided by a journal or your psychology tutor. General components of clinical case studies include: background, symptoms, assessments, diagnosis, treatment, and outcomes. Interpreting the information means the researcher decides what to include or leave out. A good case study should always clarify which information is the factual description and which is an inference or the researcher’s opinion.

1. Introduction

  • Provide background on the case context and why it is of interest, presenting background information like demographics, relevant history, and presenting problem.
  • Compare briefly to similar published cases if applicable. Clearly state the focus/importance of the case.

2. Case Presentation

  • Describe the presenting problem in detail, including symptoms, duration,and impact on daily life.
  • Include client demographics like age and gender, information about social relationships, and mental health history.
  • Describe all physical, emotional, and/or sensory symptoms reported by the client.
  • Use patient quotes to describe the initial complaint verbatim. Follow with full-sentence summaries of relevant history details gathered, including key components that led to a working diagnosis.
  • Summarize clinical exam results, namely orthopedic/neurological tests, imaging, lab tests, etc. Note actual results rather than subjective conclusions. Provide images if clearly reproducible/anonymized.
  • Clearly state the working diagnosis or clinical impression before transitioning to management.

3. Management and Outcome

  • Indicate the total duration of care and number of treatments given over what timeframe. Use specific names/descriptions for any therapies/interventions applied.
  • Present the results of the intervention,including any quantitative or qualitative data collected.
  • For outcomes, utilize visual analog scales for pain, medication usage logs, etc., if possible. Include patient self-reports of improvement/worsening of symptoms. Note the reason for discharge/end of care.

4. Discussion

  • Analyze the case, exploring contributing factors, limitations of the study, and connections to existing research.
  • Analyze the effectiveness of the intervention,considering factors like participant adherence, limitations of the study, and potential alternative explanations for the results.
  • Identify any questions raised in the case analysis and relate insights to established theories and current research if applicable. Avoid definitive claims about physiological explanations.
  • Offer clinical implications, and suggest future research directions.

5. Additional Items

  • Thank specific assistants for writing support only. No patient acknowledgments.
  • References should directly support any key claims or quotes included.
  • Use tables/figures/images only if substantially informative. Include permissions and legends/explanatory notes.
  • Provides detailed (rich qualitative) information.
  • Provides insight for further research.
  • Permitting investigation of otherwise impractical (or unethical) situations.

Case studies allow a researcher to investigate a topic in far more detail than might be possible if they were trying to deal with a large number of research participants (nomothetic approach) with the aim of ‘averaging’.

Because of their in-depth, multi-sided approach, case studies often shed light on aspects of human thinking and behavior that would be unethical or impractical to study in other ways.

Research that only looks into the measurable aspects of human behavior is not likely to give us insights into the subjective dimension of experience, which is important to psychoanalytic and humanistic psychologists.

Case studies are often used in exploratory research. They can help us generate new ideas (that might be tested by other methods). They are an important way of illustrating theories and can help show how different aspects of a person’s life are related to each other.

The method is, therefore, important for psychologists who adopt a holistic point of view (i.e., humanistic psychologists ).

Limitations

  • Lacking scientific rigor and providing little basis for generalization of results to the wider population.
  • Researchers’ own subjective feelings may influence the case study (researcher bias).
  • Difficult to replicate.
  • Time-consuming and expensive.
  • The volume of data, together with the time restrictions in place, impacted the depth of analysis that was possible within the available resources.

Because a case study deals with only one person/event/group, we can never be sure if the case study investigated is representative of the wider body of “similar” instances. This means the conclusions drawn from a particular case may not be transferable to other settings.

Because case studies are based on the analysis of qualitative (i.e., descriptive) data , a lot depends on the psychologist’s interpretation of the information she has acquired.

This means that there is a lot of scope for Anna O , and it could be that the subjective opinions of the psychologist intrude in the assessment of what the data means.

For example, Freud has been criticized for producing case studies in which the information was sometimes distorted to fit particular behavioral theories (e.g., Little Hans ).

This is also true of Money’s interpretation of the Bruce/Brenda case study (Diamond, 1997) when he ignored evidence that went against his theory.

Breuer, J., & Freud, S. (1895).  Studies on hysteria . Standard Edition 2: London.

Curtiss, S. (1981). Genie: The case of a modern wild child .

Diamond, M., & Sigmundson, K. (1997). Sex Reassignment at Birth: Long-term Review and Clinical Implications. Archives of Pediatrics & Adolescent Medicine , 151(3), 298-304

Freud, S. (1909a). Analysis of a phobia of a five year old boy. In The Pelican Freud Library (1977), Vol 8, Case Histories 1, pages 169-306

Freud, S. (1909b). Bemerkungen über einen Fall von Zwangsneurose (Der “Rattenmann”). Jb. psychoanal. psychopathol. Forsch ., I, p. 357-421; GW, VII, p. 379-463; Notes upon a case of obsessional neurosis, SE , 10: 151-318.

Harlow J. M. (1848). Passage of an iron rod through the head.  Boston Medical and Surgical Journal, 39 , 389–393.

Harlow, J. M. (1868).  Recovery from the Passage of an Iron Bar through the Head .  Publications of the Massachusetts Medical Society. 2  (3), 327-347.

Money, J., & Ehrhardt, A. A. (1972).  Man & Woman, Boy & Girl : The Differentiation and Dimorphism of Gender Identity from Conception to Maturity. Baltimore, Maryland: Johns Hopkins University Press.

Money, J., & Tucker, P. (1975). Sexual signatures: On being a man or a woman.

Further Information

  • Case Study Approach
  • Case Study Method
  • Enhancing the Quality of Case Studies in Health Services Research
  • “We do things together” A case study of “couplehood” in dementia
  • Using mixed methods for evaluating an integrative approach to cancer care: a case study

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Case Study – Methods, Examples and Guide

Table of Contents

Case Study Research

A case study is a research method that involves an in-depth examination and analysis of a particular phenomenon or case, such as an individual, organization, community, event, or situation.

It is a qualitative research approach that aims to provide a detailed and comprehensive understanding of the case being studied. Case studies typically involve multiple sources of data, including interviews, observations, documents, and artifacts, which are analyzed using various techniques, such as content analysis, thematic analysis, and grounded theory. The findings of a case study are often used to develop theories, inform policy or practice, or generate new research questions.

Types of Case Study

Types and Methods of Case Study are as follows:

Single-Case Study

A single-case study is an in-depth analysis of a single case. This type of case study is useful when the researcher wants to understand a specific phenomenon in detail.

For Example , A researcher might conduct a single-case study on a particular individual to understand their experiences with a particular health condition or a specific organization to explore their management practices. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a single-case study are often used to generate new research questions, develop theories, or inform policy or practice.

Multiple-Case Study

A multiple-case study involves the analysis of several cases that are similar in nature. This type of case study is useful when the researcher wants to identify similarities and differences between the cases.

For Example, a researcher might conduct a multiple-case study on several companies to explore the factors that contribute to their success or failure. The researcher collects data from each case, compares and contrasts the findings, and uses various techniques to analyze the data, such as comparative analysis or pattern-matching. The findings of a multiple-case study can be used to develop theories, inform policy or practice, or generate new research questions.

Exploratory Case Study

An exploratory case study is used to explore a new or understudied phenomenon. This type of case study is useful when the researcher wants to generate hypotheses or theories about the phenomenon.

For Example, a researcher might conduct an exploratory case study on a new technology to understand its potential impact on society. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as grounded theory or content analysis. The findings of an exploratory case study can be used to generate new research questions, develop theories, or inform policy or practice.

Descriptive Case Study

A descriptive case study is used to describe a particular phenomenon in detail. This type of case study is useful when the researcher wants to provide a comprehensive account of the phenomenon.

For Example, a researcher might conduct a descriptive case study on a particular community to understand its social and economic characteristics. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a descriptive case study can be used to inform policy or practice or generate new research questions.

Instrumental Case Study

An instrumental case study is used to understand a particular phenomenon that is instrumental in achieving a particular goal. This type of case study is useful when the researcher wants to understand the role of the phenomenon in achieving the goal.

For Example, a researcher might conduct an instrumental case study on a particular policy to understand its impact on achieving a particular goal, such as reducing poverty. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of an instrumental case study can be used to inform policy or practice or generate new research questions.

Case Study Data Collection Methods

Here are some common data collection methods for case studies:

Interviews involve asking questions to individuals who have knowledge or experience relevant to the case study. Interviews can be structured (where the same questions are asked to all participants) or unstructured (where the interviewer follows up on the responses with further questions). Interviews can be conducted in person, over the phone, or through video conferencing.

Observations

Observations involve watching and recording the behavior and activities of individuals or groups relevant to the case study. Observations can be participant (where the researcher actively participates in the activities) or non-participant (where the researcher observes from a distance). Observations can be recorded using notes, audio or video recordings, or photographs.

Documents can be used as a source of information for case studies. Documents can include reports, memos, emails, letters, and other written materials related to the case study. Documents can be collected from the case study participants or from public sources.

Surveys involve asking a set of questions to a sample of individuals relevant to the case study. Surveys can be administered in person, over the phone, through mail or email, or online. Surveys can be used to gather information on attitudes, opinions, or behaviors related to the case study.

Artifacts are physical objects relevant to the case study. Artifacts can include tools, equipment, products, or other objects that provide insights into the case study phenomenon.

How to conduct Case Study Research

Conducting a case study research involves several steps that need to be followed to ensure the quality and rigor of the study. Here are the steps to conduct case study research:

  • Define the research questions: The first step in conducting a case study research is to define the research questions. The research questions should be specific, measurable, and relevant to the case study phenomenon under investigation.
  • Select the case: The next step is to select the case or cases to be studied. The case should be relevant to the research questions and should provide rich and diverse data that can be used to answer the research questions.
  • Collect data: Data can be collected using various methods, such as interviews, observations, documents, surveys, and artifacts. The data collection method should be selected based on the research questions and the nature of the case study phenomenon.
  • Analyze the data: The data collected from the case study should be analyzed using various techniques, such as content analysis, thematic analysis, or grounded theory. The analysis should be guided by the research questions and should aim to provide insights and conclusions relevant to the research questions.
  • Draw conclusions: The conclusions drawn from the case study should be based on the data analysis and should be relevant to the research questions. The conclusions should be supported by evidence and should be clearly stated.
  • Validate the findings: The findings of the case study should be validated by reviewing the data and the analysis with participants or other experts in the field. This helps to ensure the validity and reliability of the findings.
  • Write the report: The final step is to write the report of the case study research. The report should provide a clear description of the case study phenomenon, the research questions, the data collection methods, the data analysis, the findings, and the conclusions. The report should be written in a clear and concise manner and should follow the guidelines for academic writing.

Examples of Case Study

Here are some examples of case study research:

  • The Hawthorne Studies : Conducted between 1924 and 1932, the Hawthorne Studies were a series of case studies conducted by Elton Mayo and his colleagues to examine the impact of work environment on employee productivity. The studies were conducted at the Hawthorne Works plant of the Western Electric Company in Chicago and included interviews, observations, and experiments.
  • The Stanford Prison Experiment: Conducted in 1971, the Stanford Prison Experiment was a case study conducted by Philip Zimbardo to examine the psychological effects of power and authority. The study involved simulating a prison environment and assigning participants to the role of guards or prisoners. The study was controversial due to the ethical issues it raised.
  • The Challenger Disaster: The Challenger Disaster was a case study conducted to examine the causes of the Space Shuttle Challenger explosion in 1986. The study included interviews, observations, and analysis of data to identify the technical, organizational, and cultural factors that contributed to the disaster.
  • The Enron Scandal: The Enron Scandal was a case study conducted to examine the causes of the Enron Corporation’s bankruptcy in 2001. The study included interviews, analysis of financial data, and review of documents to identify the accounting practices, corporate culture, and ethical issues that led to the company’s downfall.
  • The Fukushima Nuclear Disaster : The Fukushima Nuclear Disaster was a case study conducted to examine the causes of the nuclear accident that occurred at the Fukushima Daiichi Nuclear Power Plant in Japan in 2011. The study included interviews, analysis of data, and review of documents to identify the technical, organizational, and cultural factors that contributed to the disaster.

Application of Case Study

Case studies have a wide range of applications across various fields and industries. Here are some examples:

Business and Management

Case studies are widely used in business and management to examine real-life situations and develop problem-solving skills. Case studies can help students and professionals to develop a deep understanding of business concepts, theories, and best practices.

Case studies are used in healthcare to examine patient care, treatment options, and outcomes. Case studies can help healthcare professionals to develop critical thinking skills, diagnose complex medical conditions, and develop effective treatment plans.

Case studies are used in education to examine teaching and learning practices. Case studies can help educators to develop effective teaching strategies, evaluate student progress, and identify areas for improvement.

Social Sciences

Case studies are widely used in social sciences to examine human behavior, social phenomena, and cultural practices. Case studies can help researchers to develop theories, test hypotheses, and gain insights into complex social issues.

Law and Ethics

Case studies are used in law and ethics to examine legal and ethical dilemmas. Case studies can help lawyers, policymakers, and ethical professionals to develop critical thinking skills, analyze complex cases, and make informed decisions.

Purpose of Case Study

The purpose of a case study is to provide a detailed analysis of a specific phenomenon, issue, or problem in its real-life context. A case study is a qualitative research method that involves the in-depth exploration and analysis of a particular case, which can be an individual, group, organization, event, or community.

The primary purpose of a case study is to generate a comprehensive and nuanced understanding of the case, including its history, context, and dynamics. Case studies can help researchers to identify and examine the underlying factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and detailed understanding of the case, which can inform future research, practice, or policy.

Case studies can also serve other purposes, including:

  • Illustrating a theory or concept: Case studies can be used to illustrate and explain theoretical concepts and frameworks, providing concrete examples of how they can be applied in real-life situations.
  • Developing hypotheses: Case studies can help to generate hypotheses about the causal relationships between different factors and outcomes, which can be tested through further research.
  • Providing insight into complex issues: Case studies can provide insights into complex and multifaceted issues, which may be difficult to understand through other research methods.
  • Informing practice or policy: Case studies can be used to inform practice or policy by identifying best practices, lessons learned, or areas for improvement.

Advantages of Case Study Research

There are several advantages of case study research, including:

  • In-depth exploration: Case study research allows for a detailed exploration and analysis of a specific phenomenon, issue, or problem in its real-life context. This can provide a comprehensive understanding of the case and its dynamics, which may not be possible through other research methods.
  • Rich data: Case study research can generate rich and detailed data, including qualitative data such as interviews, observations, and documents. This can provide a nuanced understanding of the case and its complexity.
  • Holistic perspective: Case study research allows for a holistic perspective of the case, taking into account the various factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and comprehensive understanding of the case.
  • Theory development: Case study research can help to develop and refine theories and concepts by providing empirical evidence and concrete examples of how they can be applied in real-life situations.
  • Practical application: Case study research can inform practice or policy by identifying best practices, lessons learned, or areas for improvement.
  • Contextualization: Case study research takes into account the specific context in which the case is situated, which can help to understand how the case is influenced by the social, cultural, and historical factors of its environment.

Limitations of Case Study Research

There are several limitations of case study research, including:

  • Limited generalizability : Case studies are typically focused on a single case or a small number of cases, which limits the generalizability of the findings. The unique characteristics of the case may not be applicable to other contexts or populations, which may limit the external validity of the research.
  • Biased sampling: Case studies may rely on purposive or convenience sampling, which can introduce bias into the sample selection process. This may limit the representativeness of the sample and the generalizability of the findings.
  • Subjectivity: Case studies rely on the interpretation of the researcher, which can introduce subjectivity into the analysis. The researcher’s own biases, assumptions, and perspectives may influence the findings, which may limit the objectivity of the research.
  • Limited control: Case studies are typically conducted in naturalistic settings, which limits the control that the researcher has over the environment and the variables being studied. This may limit the ability to establish causal relationships between variables.
  • Time-consuming: Case studies can be time-consuming to conduct, as they typically involve a detailed exploration and analysis of a specific case. This may limit the feasibility of conducting multiple case studies or conducting case studies in a timely manner.
  • Resource-intensive: Case studies may require significant resources, including time, funding, and expertise. This may limit the ability of researchers to conduct case studies in resource-constrained settings.

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The conclusion is intended to help the reader understand why your research should matter to them after they have finished reading the paper. A conclusion is not merely a summary of the main topics covered or a re-statement of your research problem, but a synthesis of key points derived from the findings of your study and, if applicable, where you recommend new areas for future research. For most college-level research papers, two or three well-developed paragraphs is sufficient for a conclusion, although in some cases, more paragraphs may be required in describing the key findings and their significance.

Conclusions. The Writing Center. University of North Carolina; Conclusions. The Writing Lab and The OWL. Purdue University.

Importance of a Good Conclusion

A well-written conclusion provides you with important opportunities to demonstrate to the reader your understanding of the research problem. These include:

  • Presenting the last word on the issues you raised in your paper . Just as the introduction gives a first impression to your reader, the conclusion offers a chance to leave a lasting impression. Do this, for example, by highlighting key findings in your analysis that advance new understanding about the research problem, that are unusual or unexpected, or that have important implications applied to practice.
  • Summarizing your thoughts and conveying the larger significance of your study . The conclusion is an opportunity to succinctly re-emphasize  your answer to the "So What?" question by placing the study within the context of how your research advances past research about the topic.
  • Identifying how a gap in the literature has been addressed . The conclusion can be where you describe how a previously identified gap in the literature [first identified in your literature review section] has been addressed by your research and why this contribution is significant.
  • Demonstrating the importance of your ideas . Don't be shy. The conclusion offers an opportunity to elaborate on the impact and significance of your findings. This is particularly important if your study approached examining the research problem from an unusual or innovative perspective.
  • Introducing possible new or expanded ways of thinking about the research problem . This does not refer to introducing new information [which should be avoided], but to offer new insight and creative approaches for framing or contextualizing the research problem based on the results of your study.

Bunton, David. “The Structure of PhD Conclusion Chapters.” Journal of English for Academic Purposes 4 (July 2005): 207–224; Conclusions. The Writing Center. University of North Carolina; Kretchmer, Paul. Twelve Steps to Writing an Effective Conclusion. San Francisco Edit, 2003-2008; Conclusions. The Writing Lab and The OWL. Purdue University; Assan, Joseph. "Writing the Conclusion Chapter: The Good, the Bad and the Missing." Liverpool: Development Studies Association (2009): 1-8.

Structure and Writing Style

I.  General Rules

The general function of your paper's conclusion is to restate the main argument . It reminds the reader of the strengths of your main argument(s) and reiterates the most important evidence supporting those argument(s). Do this by clearly summarizing the context, background, and necessity of pursuing the research problem you investigated in relation to an issue, controversy, or a gap found in the literature. However, make sure that your conclusion is not simply a repetitive summary of the findings. This reduces the impact of the argument(s) you have developed in your paper.

When writing the conclusion to your paper, follow these general rules:

  • Present your conclusions in clear, concise language. Re-state the purpose of your study, then describe how your findings differ or support those of other studies and why [i.e., what were the unique, new, or crucial contributions your study made to the overall research about your topic?].
  • Do not simply reiterate your findings or the discussion of your results. Provide a synthesis of arguments presented in the paper to show how these converge to address the research problem and the overall objectives of your study.
  • Indicate opportunities for future research if you haven't already done so in the discussion section of your paper. Highlighting the need for further research provides the reader with evidence that you have an in-depth awareness of the research problem but that further investigations should take place beyond the scope of your investigation.

Consider the following points to help ensure your conclusion is presented well:

  • If the argument or purpose of your paper is complex, you may need to summarize the argument for your reader.
  • If, prior to your conclusion, you have not yet explained the significance of your findings or if you are proceeding inductively, use the end of your paper to describe your main points and explain their significance.
  • Move from a detailed to a general level of consideration that returns the topic to the context provided by the introduction or within a new context that emerges from the data [this is opposite of the introduction, which begins with general discussion of the context and ends with a detailed description of the research problem]. 

The conclusion also provides a place for you to persuasively and succinctly restate the research problem, given that the reader has now been presented with all the information about the topic . Depending on the discipline you are writing in, the concluding paragraph may contain your reflections on the evidence presented. However, the nature of being introspective about the research you have conducted will depend on the topic and whether your professor wants you to express your observations in this way. If asked to think introspectively about the topics, do not delve into idle speculation. Being introspective means looking within yourself as an author to try and understand an issue more deeply, not to guess at possible outcomes or make up scenarios not supported by the evidence.

II.  Developing a Compelling Conclusion

Although an effective conclusion needs to be clear and succinct, it does not need to be written passively or lack a compelling narrative. Strategies to help you move beyond merely summarizing the key points of your research paper may include any of the following:

  • If your essay deals with a critical, contemporary problem, warn readers of the possible consequences of not attending to the problem proactively.
  • Recommend a specific course or courses of action that, if adopted, could address a specific problem in practice or in the development of new knowledge leading to positive change.
  • Cite a relevant quotation or expert opinion already noted in your paper in order to lend authority and support to the conclusion(s) you have reached [a good source would be from your literature review].
  • Explain the consequences of your research in a way that elicits action or demonstrates urgency in seeking change.
  • Restate a key statistic, fact, or visual image to emphasize the most important finding of your paper.
  • If your discipline encourages personal reflection, illustrate your concluding point by drawing from your own life experiences.
  • Return to an anecdote, an example, or a quotation that you presented in your introduction, but add further insight derived from the findings of your study; use your interpretation of results from your study to recast it in new or important ways.
  • Provide a "take-home" message in the form of a succinct, declarative statement that you want the reader to remember about your study.

III. Problems to Avoid

Failure to be concise Your conclusion section should be concise and to the point. Conclusions that are too lengthy often have unnecessary information in them. The conclusion is not the place for details about your methodology or results. Although you should give a summary of what was learned from your research, this summary should be relatively brief, since the emphasis in the conclusion is on the implications, evaluations, insights, and other forms of analysis that you make. Strategies for writing concisely can be found here .

Failure to comment on larger, more significant issues In the introduction, your task was to move from the general [the field of study] to the specific [the research problem]. However, in the conclusion, your task is to move from a specific discussion [your research problem] back to a general discussion framed around the implications and significance of your findings [i.e., how your research contributes new understanding or fills an important gap in the literature]. In short, the conclusion is where you should place your research within a larger context [visualize your paper as an hourglass--start with a broad introduction and review of the literature, move to the specific analysis and discussion, conclude with a broad summary of the study's implications and significance].

Failure to reveal problems and negative results Negative aspects of the research process should never be ignored. These are problems, deficiencies, or challenges encountered during your study. They should be summarized as a way of qualifying your overall conclusions. If you encountered negative or unintended results [i.e., findings that are validated outside the research context in which they were generated], you must report them in the results section and discuss their implications in the discussion section of your paper. In the conclusion, use negative results as an opportunity to explain their possible significance and/or how they may form the basis for future research.

Failure to provide a clear summary of what was learned In order to be able to discuss how your research fits within your field of study [and possibly the world at large], you need to summarize briefly and succinctly how it contributes to new knowledge or a new understanding about the research problem. This element of your conclusion may be only a few sentences long.

Failure to match the objectives of your research Often research objectives in the social and behavioral sciences change while the research is being carried out. This is not a problem unless you forget to go back and refine the original objectives in your introduction. As these changes emerge they must be documented so that they accurately reflect what you were trying to accomplish in your research [not what you thought you might accomplish when you began].

Resist the urge to apologize If you've immersed yourself in studying the research problem, you presumably should know a good deal about it [perhaps even more than your professor!]. Nevertheless, by the time you have finished writing, you may be having some doubts about what you have produced. Repress those doubts! Don't undermine your authority as a researcher by saying something like, "This is just one approach to examining this problem; there may be other, much better approaches that...." The overall tone of your conclusion should convey confidence to the reader about the study's validity and realiability.

Assan, Joseph. "Writing the Conclusion Chapter: The Good, the Bad and the Missing." Liverpool: Development Studies Association (2009): 1-8; Concluding Paragraphs. College Writing Center at Meramec. St. Louis Community College; Conclusions. The Writing Center. University of North Carolina; Conclusions. The Writing Lab and The OWL. Purdue University; Freedman, Leora  and Jerry Plotnick. Introductions and Conclusions. The Lab Report. University College Writing Centre. University of Toronto; Leibensperger, Summer. Draft Your Conclusion. Academic Center, the University of Houston-Victoria, 2003; Make Your Last Words Count. The Writer’s Handbook. Writing Center. University of Wisconsin Madison; Miquel, Fuster-Marquez and Carmen Gregori-Signes. “Chapter Six: ‘Last but Not Least:’ Writing the Conclusion of Your Paper.” In Writing an Applied Linguistics Thesis or Dissertation: A Guide to Presenting Empirical Research . John Bitchener, editor. (Basingstoke,UK: Palgrave Macmillan, 2010), pp. 93-105; Tips for Writing a Good Conclusion. Writing@CSU. Colorado State University; Kretchmer, Paul. Twelve Steps to Writing an Effective Conclusion. San Francisco Edit, 2003-2008; Writing Conclusions. Writing Tutorial Services, Center for Innovative Teaching and Learning. Indiana University; Writing: Considering Structure and Organization. Institute for Writing Rhetoric. Dartmouth College.

Writing Tip

Don't Belabor the Obvious!

Avoid phrases like "in conclusion...," "in summary...," or "in closing...." These phrases can be useful, even welcome, in oral presentations. But readers can see by the tell-tale section heading and number of pages remaining that they are reaching the end of your paper. You'll irritate your readers if you belabor the obvious.

Assan, Joseph. "Writing the Conclusion Chapter: The Good, the Bad and the Missing." Liverpool: Development Studies Association (2009): 1-8.

Another Writing Tip

New Insight, Not New Information!

Don't surprise the reader with new information in your conclusion that was never referenced anywhere else in the paper. This why the conclusion rarely has citations to sources. If you have new information to present, add it to the discussion or other appropriate section of the paper. Note that, although no new information is introduced, the conclusion, along with the discussion section, is where you offer your most "original" contributions in the paper; the conclusion is where you describe the value of your research, demonstrate that you understand the material that you’ve presented, and position your findings within the larger context of scholarship on the topic, including describing how your research contributes new insights to that scholarship.

Assan, Joseph. "Writing the Conclusion Chapter: The Good, the Bad and the Missing." Liverpool: Development Studies Association (2009): 1-8; Conclusions. The Writing Center. University of North Carolina.

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  • Volume 21, Issue 1
  • What is a case study?
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  • Roberta Heale 1 ,
  • Alison Twycross 2
  • 1 School of Nursing , Laurentian University , Sudbury , Ontario , Canada
  • 2 School of Health and Social Care , London South Bank University , London , UK
  • Correspondence to Dr Roberta Heale, School of Nursing, Laurentian University, Sudbury, ON P3E2C6, Canada; rheale{at}laurentian.ca

https://doi.org/10.1136/eb-2017-102845

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What is it?

Case study is a research methodology, typically seen in social and life sciences. There is no one definition of case study research. 1 However, very simply… ‘a case study can be defined as an intensive study about a person, a group of people or a unit, which is aimed to generalize over several units’. 1 A case study has also been described as an intensive, systematic investigation of a single individual, group, community or some other unit in which the researcher examines in-depth data relating to several variables. 2

Often there are several similar cases to consider such as educational or social service programmes that are delivered from a number of locations. Although similar, they are complex and have unique features. In these circumstances, the evaluation of several, similar cases will provide a better answer to a research question than if only one case is examined, hence the multiple-case study. Stake asserts that the cases are grouped and viewed as one entity, called the quintain . 6  ‘We study what is similar and different about the cases to understand the quintain better’. 6

The steps when using case study methodology are the same as for other types of research. 6 The first step is defining the single case or identifying a group of similar cases that can then be incorporated into a multiple-case study. A search to determine what is known about the case(s) is typically conducted. This may include a review of the literature, grey literature, media, reports and more, which serves to establish a basic understanding of the cases and informs the development of research questions. Data in case studies are often, but not exclusively, qualitative in nature. In multiple-case studies, analysis within cases and across cases is conducted. Themes arise from the analyses and assertions about the cases as a whole, or the quintain, emerge. 6

Benefits and limitations of case studies

If a researcher wants to study a specific phenomenon arising from a particular entity, then a single-case study is warranted and will allow for a in-depth understanding of the single phenomenon and, as discussed above, would involve collecting several different types of data. This is illustrated in example 1 below.

Using a multiple-case research study allows for a more in-depth understanding of the cases as a unit, through comparison of similarities and differences of the individual cases embedded within the quintain. Evidence arising from multiple-case studies is often stronger and more reliable than from single-case research. Multiple-case studies allow for more comprehensive exploration of research questions and theory development. 6

Despite the advantages of case studies, there are limitations. The sheer volume of data is difficult to organise and data analysis and integration strategies need to be carefully thought through. There is also sometimes a temptation to veer away from the research focus. 2 Reporting of findings from multiple-case research studies is also challenging at times, 1 particularly in relation to the word limits for some journal papers.

Examples of case studies

Example 1: nurses’ paediatric pain management practices.

One of the authors of this paper (AT) has used a case study approach to explore nurses’ paediatric pain management practices. This involved collecting several datasets:

Observational data to gain a picture about actual pain management practices.

Questionnaire data about nurses’ knowledge about paediatric pain management practices and how well they felt they managed pain in children.

Questionnaire data about how critical nurses perceived pain management tasks to be.

These datasets were analysed separately and then compared 7–9 and demonstrated that nurses’ level of theoretical did not impact on the quality of their pain management practices. 7 Nor did individual nurse’s perceptions of how critical a task was effect the likelihood of them carrying out this task in practice. 8 There was also a difference in self-reported and observed practices 9 ; actual (observed) practices did not confirm to best practice guidelines, whereas self-reported practices tended to.

Example 2: quality of care for complex patients at Nurse Practitioner-Led Clinics (NPLCs)

The other author of this paper (RH) has conducted a multiple-case study to determine the quality of care for patients with complex clinical presentations in NPLCs in Ontario, Canada. 10 Five NPLCs served as individual cases that, together, represented the quatrain. Three types of data were collected including:

Review of documentation related to the NPLC model (media, annual reports, research articles, grey literature and regulatory legislation).

Interviews with nurse practitioners (NPs) practising at the five NPLCs to determine their perceptions of the impact of the NPLC model on the quality of care provided to patients with multimorbidity.

Chart audits conducted at the five NPLCs to determine the extent to which evidence-based guidelines were followed for patients with diabetes and at least one other chronic condition.

The three sources of data collected from the five NPLCs were analysed and themes arose related to the quality of care for complex patients at NPLCs. The multiple-case study confirmed that nurse practitioners are the primary care providers at the NPLCs, and this positively impacts the quality of care for patients with multimorbidity. Healthcare policy, such as lack of an increase in salary for NPs for 10 years, has resulted in issues in recruitment and retention of NPs at NPLCs. This, along with insufficient resources in the communities where NPLCs are located and high patient vulnerability at NPLCs, have a negative impact on the quality of care. 10

These examples illustrate how collecting data about a single case or multiple cases helps us to better understand the phenomenon in question. Case study methodology serves to provide a framework for evaluation and analysis of complex issues. It shines a light on the holistic nature of nursing practice and offers a perspective that informs improved patient care.

  • Gustafsson J
  • Calanzaro M
  • Sandelowski M

Competing interests None declared.

Provenance and peer review Commissioned; internally peer reviewed.

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All You Wanted to Know About How to Write a Case Study

conclusion on importance of case study

What do you study in your college? If you are a psychology, sociology, or anthropology student, we bet you might be familiar with what a case study is. This research method is used to study a certain person, group, or situation. In this guide from our dissertation writing service , you will learn how to write a case study professionally, from researching to citing sources properly. Also, we will explore different types of case studies and show you examples — so that you won’t have any other questions left.

What Is a Case Study?

A case study is a subcategory of research design which investigates problems and offers solutions. Case studies can range from academic research studies to corporate promotional tools trying to sell an idea—their scope is quite vast.

What Is the Difference Between a Research Paper and a Case Study?

While research papers turn the reader’s attention to a certain problem, case studies go even further. Case study guidelines require students to pay attention to details, examining issues closely and in-depth using different research methods. For example, case studies may be used to examine court cases if you study Law, or a patient's health history if you study Medicine. Case studies are also used in Marketing, which are thorough, empirically supported analysis of a good or service's performance. Well-designed case studies can be valuable for prospective customers as they can identify and solve the potential customers pain point.

Case studies involve a lot of storytelling – they usually examine particular cases for a person or a group of people. This method of research is very helpful, as it is very practical and can give a lot of hands-on information. Most commonly, the length of the case study is about 500-900 words, which is much less than the length of an average research paper.

The structure of a case study is very similar to storytelling. It has a protagonist or main character, which in your case is actually a problem you are trying to solve. You can use the system of 3 Acts to make it a compelling story. It should have an introduction, rising action, a climax where transformation occurs, falling action, and a solution.

Here is a rough formula for you to use in your case study:

Problem (Act I): > Solution (Act II) > Result (Act III) > Conclusion.

Types of Case Studies

The purpose of a case study is to provide detailed reports on an event, an institution, a place, future customers, or pretty much anything. There are a few common types of case study, but the type depends on the topic. The following are the most common domains where case studies are needed:

Types of Case Studies

  • Historical case studies are great to learn from. Historical events have a multitude of source info offering different perspectives. There are always modern parallels where these perspectives can be applied, compared, and thoroughly analyzed.
  • Problem-oriented case studies are usually used for solving problems. These are often assigned as theoretical situations where you need to immerse yourself in the situation to examine it. Imagine you’re working for a startup and you’ve just noticed a significant flaw in your product’s design. Before taking it to the senior manager, you want to do a comprehensive study on the issue and provide solutions. On a greater scale, problem-oriented case studies are a vital part of relevant socio-economic discussions.
  • Cumulative case studies collect information and offer comparisons. In business, case studies are often used to tell people about the value of a product.
  • Critical case studies explore the causes and effects of a certain case.
  • Illustrative case studies describe certain events, investigating outcomes and lessons learned.

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Case Study Format

The case study format is typically made up of eight parts:

  • Executive Summary. Explain what you will examine in the case study. Write an overview of the field you’re researching. Make a thesis statement and sum up the results of your observation in a maximum of 2 sentences.
  • Background. Provide background information and the most relevant facts. Isolate the issues.
  • Case Evaluation. Isolate the sections of the study you want to focus on. In it, explain why something is working or is not working.
  • Proposed Solutions. Offer realistic ways to solve what isn’t working or how to improve its current condition. Explain why these solutions work by offering testable evidence.
  • Conclusion. Summarize the main points from the case evaluations and proposed solutions. 6. Recommendations. Talk about the strategy that you should choose. Explain why this choice is the most appropriate.
  • Implementation. Explain how to put the specific strategies into action.
  • References. Provide all the citations.

How to Write a Case Study

Let's discover how to write a case study.

How to Write a Case Study

Setting Up the Research

When writing a case study, remember that research should always come first. Reading many different sources and analyzing other points of view will help you come up with more creative solutions. You can also conduct an actual interview to thoroughly investigate the customer story that you'll need for your case study. Including all of the necessary research, writing a case study may take some time. The research process involves doing the following:

  • Define your objective. Explain the reason why you’re presenting your subject. Figure out where you will feature your case study; whether it is written, on video, shown as an infographic, streamed as a podcast, etc.
  • Determine who will be the right candidate for your case study. Get permission, quotes, and other features that will make your case study effective. Get in touch with your candidate to see if they approve of being part of your work. Study that candidate’s situation and note down what caused it.
  • Identify which various consequences could result from the situation. Follow these guidelines on how to start a case study: surf the net to find some general information you might find useful.
  • Make a list of credible sources and examine them. Seek out important facts and highlight problems. Always write down your ideas and make sure to brainstorm.
  • Focus on several key issues – why they exist, and how they impact your research subject. Think of several unique solutions. Draw from class discussions, readings, and personal experience. When writing a case study, focus on the best solution and explore it in depth. After having all your research in place, writing a case study will be easy. You may first want to check the rubric and criteria of your assignment for the correct case study structure.

Read Also: ' WHAT IS A CREDIBLE SOURCES ?'

Although your instructor might be looking at slightly different criteria, every case study rubric essentially has the same standards. Your professor will want you to exhibit 8 different outcomes:

  • Correctly identify the concepts, theories, and practices in the discipline.
  • Identify the relevant theories and principles associated with the particular study.
  • Evaluate legal and ethical principles and apply them to your decision-making.
  • Recognize the global importance and contribution of your case.
  • Construct a coherent summary and explanation of the study.
  • Demonstrate analytical and critical-thinking skills.
  • Explain the interrelationships between the environment and nature.
  • Integrate theory and practice of the discipline within the analysis.

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Case Study Outline

Let's look at the structure of an outline based on the issue of the alcoholic addiction of 30 people.

Introduction

  • Statement of the issue: Alcoholism is a disease rather than a weakness of character.
  • Presentation of the problem: Alcoholism is affecting more than 14 million people in the USA, which makes it the third most common mental illness there.
  • Explanation of the terms: In the past, alcoholism was commonly referred to as alcohol dependence or alcohol addiction. Alcoholism is now the more severe stage of this addiction in the disorder spectrum.
  • Hypotheses: Drinking in excess can lead to the use of other drugs.
  • Importance of your story: How the information you present can help people with their addictions.
  • Background of the story: Include an explanation of why you chose this topic.
  • Presentation of analysis and data: Describe the criteria for choosing 30 candidates, the structure of the interview, and the outcomes.
  • Strong argument 1: ex. X% of candidates dealing with anxiety and depression...
  • Strong argument 2: ex. X amount of people started drinking by their mid-teens.
  • Strong argument 3: ex. X% of respondents’ parents had issues with alcohol.
  • Concluding statement: I have researched if alcoholism is a disease and found out that…
  • Recommendations: Ways and actions for preventing alcohol use.

Writing a Case Study Draft

After you’ve done your case study research and written the outline, it’s time to focus on the draft. In a draft, you have to develop and write your case study by using: the data which you collected throughout the research, interviews, and the analysis processes that were undertaken. Follow these rules for the draft:

How to Write a Case Study

  • Your draft should contain at least 4 sections: an introduction; a body where you should include background information, an explanation of why you decided to do this case study, and a presentation of your main findings; a conclusion where you present data; and references.
  • In the introduction, you should set the pace very clearly. You can even raise a question or quote someone you interviewed in the research phase. It must provide adequate background information on the topic. The background may include analyses of previous studies on your topic. Include the aim of your case here as well. Think of it as a thesis statement. The aim must describe the purpose of your work—presenting the issues that you want to tackle. Include background information, such as photos or videos you used when doing the research.
  • Describe your unique research process, whether it was through interviews, observations, academic journals, etc. The next point includes providing the results of your research. Tell the audience what you found out. Why is this important, and what could be learned from it? Discuss the real implications of the problem and its significance in the world.
  • Include quotes and data (such as findings, percentages, and awards). This will add a personal touch and better credibility to the case you present. Explain what results you find during your interviews in regards to the problem and how it developed. Also, write about solutions which have already been proposed by other people who have already written about this case.
  • At the end of your case study, you should offer possible solutions, but don’t worry about solving them yourself.

Use Data to Illustrate Key Points in Your Case Study

Even though your case study is a story, it should be based on evidence. Use as much data as possible to illustrate your point. Without the right data, your case study may appear weak and the readers may not be able to relate to your issue as much as they should. Let's see the examples from essay writing service :

‍ With data: Alcoholism is affecting more than 14 million people in the USA, which makes it the third most common mental illness there. Without data: A lot of people suffer from alcoholism in the United States.

Try to include as many credible sources as possible. You may have terms or sources that could be hard for other cultures to understand. If this is the case, you should include them in the appendix or Notes for the Instructor or Professor.

Finalizing the Draft: Checklist

After you finish drafting your case study, polish it up by answering these ‘ask yourself’ questions and think about how to end your case study:

  • Check that you follow the correct case study format, also in regards to text formatting.
  • Check that your work is consistent with its referencing and citation style.
  • Micro-editing — check for grammar and spelling issues.
  • Macro-editing — does ‘the big picture’ come across to the reader? Is there enough raw data, such as real-life examples or personal experiences? Have you made your data collection process completely transparent? Does your analysis provide a clear conclusion, allowing for further research and practice?

Problems to avoid:

  • Overgeneralization – Do not go into further research that deviates from the main problem.
  • Failure to Document Limitations – Just as you have to clearly state the limitations of a general research study, you must describe the specific limitations inherent in the subject of analysis.
  • Failure to Extrapolate All Possible Implications – Just as you don't want to over-generalize from your case study findings, you also have to be thorough in the consideration of all possible outcomes or recommendations derived from your findings.

How to Create a Title Page and Cite a Case Study

Let's see how to create an awesome title page.

Your title page depends on the prescribed citation format. The title page should include:

  • A title that attracts some attention and describes your study
  • The title should have the words “case study” in it
  • The title should range between 5-9 words in length
  • Your name and contact information
  • Your finished paper should be only 500 to 1,500 words in length.With this type of assignment, write effectively and avoid fluff

Here is a template for the APA and MLA format title page:

There are some cases when you need to cite someone else's study in your own one – therefore, you need to master how to cite a case study. A case study is like a research paper when it comes to citations. You can cite it like you cite a book, depending on what style you need.

Citation Example in MLA ‍ Hill, Linda, Tarun Khanna, and Emily A. Stecker. HCL Technologies. Boston: Harvard Business Publishing, 2008. Print.
Citation Example in APA ‍ Hill, L., Khanna, T., & Stecker, E. A. (2008). HCL Technologies. Boston: Harvard Business Publishing.
Citation Example in Chicago Hill, Linda, Tarun Khanna, and Emily A. Stecker. HCL Technologies.

Case Study Examples

To give you an idea of a professional case study example, we gathered and linked some below.

Eastman Kodak Case Study

Case Study Example: Audi Trains Mexican Autoworkers in Germany

To conclude, a case study is one of the best methods of getting an overview of what happened to a person, a group, or a situation in practice. It allows you to have an in-depth glance at the real-life problems that businesses, healthcare industry, criminal justice, etc. may face. This insight helps us look at such situations in a different light. This is because we see scenarios that we otherwise would not, without necessarily being there. If you need custom essays , try our research paper writing services .

Get Help Form Qualified Writers

Crafting a case study is not easy. You might want to write one of high quality, but you don’t have the time or expertise. If you’re having trouble with your case study, help with essay request - we'll help. EssayPro writers have read and written countless case studies and are experts in endless disciplines. Request essay writing, editing, or proofreading assistance from our custom case study writing service , and all of your worries will be gone.

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What Is A Case Study?

How to cite a case study in apa, how to write a case study.

Daniel Parker

Daniel Parker

is a seasoned educational writer focusing on scholarship guidance, research papers, and various forms of academic essays including reflective and narrative essays. His expertise also extends to detailed case studies. A scholar with a background in English Literature and Education, Daniel’s work on EssayPro blog aims to support students in achieving academic excellence and securing scholarships. His hobbies include reading classic literature and participating in academic forums.

conclusion on importance of case study

is an expert in nursing and healthcare, with a strong background in history, law, and literature. Holding advanced degrees in nursing and public health, his analytical approach and comprehensive knowledge help students navigate complex topics. On EssayPro blog, Adam provides insightful articles on everything from historical analysis to the intricacies of healthcare policies. In his downtime, he enjoys historical documentaries and volunteering at local clinics.

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How to Write a Conclusion for Research Papers (with Examples)

How to Write a Conclusion for Research Papers (with Examples)

The conclusion of a research paper is a crucial section that plays a significant role in the overall impact and effectiveness of your research paper. However, this is also the section that typically receives less attention compared to the introduction and the body of the paper. The conclusion serves to provide a concise summary of the key findings, their significance, their implications, and a sense of closure to the study. Discussing how can the findings be applied in real-world scenarios or inform policy, practice, or decision-making is especially valuable to practitioners and policymakers. The research paper conclusion also provides researchers with clear insights and valuable information for their own work, which they can then build on and contribute to the advancement of knowledge in the field.

The research paper conclusion should explain the significance of your findings within the broader context of your field. It restates how your results contribute to the existing body of knowledge and whether they confirm or challenge existing theories or hypotheses. Also, by identifying unanswered questions or areas requiring further investigation, your awareness of the broader research landscape can be demonstrated.

Remember to tailor the research paper conclusion to the specific needs and interests of your intended audience, which may include researchers, practitioners, policymakers, or a combination of these.

Table of Contents

What is a conclusion in a research paper, summarizing conclusion, editorial conclusion, externalizing conclusion, importance of a good research paper conclusion, how to write a conclusion for your research paper, research paper conclusion examples.

  • How to write a research paper conclusion with Paperpal? 

Frequently Asked Questions

A conclusion in a research paper is the final section where you summarize and wrap up your research, presenting the key findings and insights derived from your study. The research paper conclusion is not the place to introduce new information or data that was not discussed in the main body of the paper. When working on how to conclude a research paper, remember to stick to summarizing and interpreting existing content. The research paper conclusion serves the following purposes: 1

  • Warn readers of the possible consequences of not attending to the problem.
  • Recommend specific course(s) of action.
  • Restate key ideas to drive home the ultimate point of your research paper.
  • Provide a “take-home” message that you want the readers to remember about your study.

conclusion on importance of case study

Types of conclusions for research papers

In research papers, the conclusion provides closure to the reader. The type of research paper conclusion you choose depends on the nature of your study, your goals, and your target audience. I provide you with three common types of conclusions:

A summarizing conclusion is the most common type of conclusion in research papers. It involves summarizing the main points, reiterating the research question, and restating the significance of the findings. This common type of research paper conclusion is used across different disciplines.

An editorial conclusion is less common but can be used in research papers that are focused on proposing or advocating for a particular viewpoint or policy. It involves presenting a strong editorial or opinion based on the research findings and offering recommendations or calls to action.

An externalizing conclusion is a type of conclusion that extends the research beyond the scope of the paper by suggesting potential future research directions or discussing the broader implications of the findings. This type of conclusion is often used in more theoretical or exploratory research papers.

Align your conclusion’s tone with the rest of your research paper. Start Writing with Paperpal Now!  

The conclusion in a research paper serves several important purposes:

  • Offers Implications and Recommendations : Your research paper conclusion is an excellent place to discuss the broader implications of your research and suggest potential areas for further study. It’s also an opportunity to offer practical recommendations based on your findings.
  • Provides Closure : A good research paper conclusion provides a sense of closure to your paper. It should leave the reader with a feeling that they have reached the end of a well-structured and thought-provoking research project.
  • Leaves a Lasting Impression : Writing a well-crafted research paper conclusion leaves a lasting impression on your readers. It’s your final opportunity to leave them with a new idea, a call to action, or a memorable quote.

conclusion on importance of case study

Writing a strong conclusion for your research paper is essential to leave a lasting impression on your readers. Here’s a step-by-step process to help you create and know what to put in the conclusion of a research paper: 2

  • Research Statement : Begin your research paper conclusion by restating your research statement. This reminds the reader of the main point you’ve been trying to prove throughout your paper. Keep it concise and clear.
  • Key Points : Summarize the main arguments and key points you’ve made in your paper. Avoid introducing new information in the research paper conclusion. Instead, provide a concise overview of what you’ve discussed in the body of your paper.
  • Address the Research Questions : If your research paper is based on specific research questions or hypotheses, briefly address whether you’ve answered them or achieved your research goals. Discuss the significance of your findings in this context.
  • Significance : Highlight the importance of your research and its relevance in the broader context. Explain why your findings matter and how they contribute to the existing knowledge in your field.
  • Implications : Explore the practical or theoretical implications of your research. How might your findings impact future research, policy, or real-world applications? Consider the “so what?” question.
  • Future Research : Offer suggestions for future research in your area. What questions or aspects remain unanswered or warrant further investigation? This shows that your work opens the door for future exploration.
  • Closing Thought : Conclude your research paper conclusion with a thought-provoking or memorable statement. This can leave a lasting impression on your readers and wrap up your paper effectively. Avoid introducing new information or arguments here.
  • Proofread and Revise : Carefully proofread your conclusion for grammar, spelling, and clarity. Ensure that your ideas flow smoothly and that your conclusion is coherent and well-structured.

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Remember that a well-crafted research paper conclusion is a reflection of the strength of your research and your ability to communicate its significance effectively. It should leave a lasting impression on your readers and tie together all the threads of your paper. Now you know how to start the conclusion of a research paper and what elements to include to make it impactful, let’s look at a research paper conclusion sample.

conclusion on importance of case study

How to write a research paper conclusion with Paperpal?

A research paper conclusion is not just a summary of your study, but a synthesis of the key findings that ties the research together and places it in a broader context. A research paper conclusion should be concise, typically around one paragraph in length. However, some complex topics may require a longer conclusion to ensure the reader is left with a clear understanding of the study’s significance. Paperpal, an AI writing assistant trusted by over 800,000 academics globally, can help you write a well-structured conclusion for your research paper. 

  • Sign Up or Log In: Create a new Paperpal account or login with your details.  
  • Navigate to Features : Once logged in, head over to the features’ side navigation pane. Click on Templates and you’ll find a suite of generative AI features to help you write better, faster.  
  • Generate an outline: Under Templates, select ‘Outlines’. Choose ‘Research article’ as your document type.  
  • Select your section: Since you’re focusing on the conclusion, select this section when prompted.  
  • Choose your field of study: Identifying your field of study allows Paperpal to provide more targeted suggestions, ensuring the relevance of your conclusion to your specific area of research. 
  • Provide a brief description of your study: Enter details about your research topic and findings. This information helps Paperpal generate a tailored outline that aligns with your paper’s content. 
  • Generate the conclusion outline: After entering all necessary details, click on ‘generate’. Paperpal will then create a structured outline for your conclusion, to help you start writing and build upon the outline.  
  • Write your conclusion: Use the generated outline to build your conclusion. The outline serves as a guide, ensuring you cover all critical aspects of a strong conclusion, from summarizing key findings to highlighting the research’s implications. 
  • Refine and enhance: Paperpal’s ‘Make Academic’ feature can be particularly useful in the final stages. Select any paragraph of your conclusion and use this feature to elevate the academic tone, ensuring your writing is aligned to the academic journal standards. 

By following these steps, Paperpal not only simplifies the process of writing a research paper conclusion but also ensures it is impactful, concise, and aligned with academic standards. Sign up with Paperpal today and write your research paper conclusion 2x faster .  

The research paper conclusion is a crucial part of your paper as it provides the final opportunity to leave a strong impression on your readers. In the research paper conclusion, summarize the main points of your research paper by restating your research statement, highlighting the most important findings, addressing the research questions or objectives, explaining the broader context of the study, discussing the significance of your findings, providing recommendations if applicable, and emphasizing the takeaway message. The main purpose of the conclusion is to remind the reader of the main point or argument of your paper and to provide a clear and concise summary of the key findings and their implications. All these elements should feature on your list of what to put in the conclusion of a research paper to create a strong final statement for your work.

A strong conclusion is a critical component of a research paper, as it provides an opportunity to wrap up your arguments, reiterate your main points, and leave a lasting impression on your readers. Here are the key elements of a strong research paper conclusion: 1. Conciseness : A research paper conclusion should be concise and to the point. It should not introduce new information or ideas that were not discussed in the body of the paper. 2. Summarization : The research paper conclusion should be comprehensive enough to give the reader a clear understanding of the research’s main contributions. 3 . Relevance : Ensure that the information included in the research paper conclusion is directly relevant to the research paper’s main topic and objectives; avoid unnecessary details. 4 . Connection to the Introduction : A well-structured research paper conclusion often revisits the key points made in the introduction and shows how the research has addressed the initial questions or objectives. 5. Emphasis : Highlight the significance and implications of your research. Why is your study important? What are the broader implications or applications of your findings? 6 . Call to Action : Include a call to action or a recommendation for future research or action based on your findings.

The length of a research paper conclusion can vary depending on several factors, including the overall length of the paper, the complexity of the research, and the specific journal requirements. While there is no strict rule for the length of a conclusion, but it’s generally advisable to keep it relatively short. A typical research paper conclusion might be around 5-10% of the paper’s total length. For example, if your paper is 10 pages long, the conclusion might be roughly half a page to one page in length.

In general, you do not need to include citations in the research paper conclusion. Citations are typically reserved for the body of the paper to support your arguments and provide evidence for your claims. However, there may be some exceptions to this rule: 1. If you are drawing a direct quote or paraphrasing a specific source in your research paper conclusion, you should include a citation to give proper credit to the original author. 2. If your conclusion refers to or discusses specific research, data, or sources that are crucial to the overall argument, citations can be included to reinforce your conclusion’s validity.

The conclusion of a research paper serves several important purposes: 1. Summarize the Key Points 2. Reinforce the Main Argument 3. Provide Closure 4. Offer Insights or Implications 5. Engage the Reader. 6. Reflect on Limitations

Remember that the primary purpose of the research paper conclusion is to leave a lasting impression on the reader, reinforcing the key points and providing closure to your research. It’s often the last part of the paper that the reader will see, so it should be strong and well-crafted.

  • Makar, G., Foltz, C., Lendner, M., & Vaccaro, A. R. (2018). How to write effective discussion and conclusion sections. Clinical spine surgery, 31(8), 345-346.
  • Bunton, D. (2005). The structure of PhD conclusion chapters.  Journal of English for academic purposes ,  4 (3), 207-224.

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The Writing Center • University of North Carolina at Chapel Hill

Conclusions

What this handout is about.

This handout will explain the functions of conclusions, offer strategies for writing effective ones, help you evaluate conclusions you’ve drafted, and suggest approaches to avoid.

About conclusions

Introductions and conclusions can be difficult to write, but they’re worth investing time in. They can have a significant influence on a reader’s experience of your paper.

Just as your introduction acts as a bridge that transports your readers from their own lives into the “place” of your analysis, your conclusion can provide a bridge to help your readers make the transition back to their daily lives. Such a conclusion will help them see why all your analysis and information should matter to them after they put the paper down.

Your conclusion is your chance to have the last word on the subject. The conclusion allows you to have the final say on the issues you have raised in your paper, to synthesize your thoughts, to demonstrate the importance of your ideas, and to propel your reader to a new view of the subject. It is also your opportunity to make a good final impression and to end on a positive note.

Your conclusion can go beyond the confines of the assignment. The conclusion pushes beyond the boundaries of the prompt and allows you to consider broader issues, make new connections, and elaborate on the significance of your findings.

Your conclusion should make your readers glad they read your paper. Your conclusion gives your reader something to take away that will help them see things differently or appreciate your topic in personally relevant ways. It can suggest broader implications that will not only interest your reader, but also enrich your reader’s life in some way. It is your gift to the reader.

Strategies for writing an effective conclusion

One or more of the following strategies may help you write an effective conclusion:

  • Play the “So What” Game. If you’re stuck and feel like your conclusion isn’t saying anything new or interesting, ask a friend to read it with you. Whenever you make a statement from your conclusion, ask the friend to say, “So what?” or “Why should anybody care?” Then ponder that question and answer it. Here’s how it might go: You: Basically, I’m just saying that education was important to Douglass. Friend: So what? You: Well, it was important because it was a key to him feeling like a free and equal citizen. Friend: Why should anybody care? You: That’s important because plantation owners tried to keep slaves from being educated so that they could maintain control. When Douglass obtained an education, he undermined that control personally. You can also use this strategy on your own, asking yourself “So What?” as you develop your ideas or your draft.
  • Return to the theme or themes in the introduction. This strategy brings the reader full circle. For example, if you begin by describing a scenario, you can end with the same scenario as proof that your essay is helpful in creating a new understanding. You may also refer to the introductory paragraph by using key words or parallel concepts and images that you also used in the introduction.
  • Synthesize, don’t summarize. Include a brief summary of the paper’s main points, but don’t simply repeat things that were in your paper. Instead, show your reader how the points you made and the support and examples you used fit together. Pull it all together.
  • Include a provocative insight or quotation from the research or reading you did for your paper.
  • Propose a course of action, a solution to an issue, or questions for further study. This can redirect your reader’s thought process and help them to apply your info and ideas to their own life or to see the broader implications.
  • Point to broader implications. For example, if your paper examines the Greensboro sit-ins or another event in the Civil Rights Movement, you could point out its impact on the Civil Rights Movement as a whole. A paper about the style of writer Virginia Woolf could point to her influence on other writers or on later feminists.

Strategies to avoid

  • Beginning with an unnecessary, overused phrase such as “in conclusion,” “in summary,” or “in closing.” Although these phrases can work in speeches, they come across as wooden and trite in writing.
  • Stating the thesis for the very first time in the conclusion.
  • Introducing a new idea or subtopic in your conclusion.
  • Ending with a rephrased thesis statement without any substantive changes.
  • Making sentimental, emotional appeals that are out of character with the rest of an analytical paper.
  • Including evidence (quotations, statistics, etc.) that should be in the body of the paper.

Four kinds of ineffective conclusions

  • The “That’s My Story and I’m Sticking to It” Conclusion. This conclusion just restates the thesis and is usually painfully short. It does not push the ideas forward. People write this kind of conclusion when they can’t think of anything else to say. Example: In conclusion, Frederick Douglass was, as we have seen, a pioneer in American education, proving that education was a major force for social change with regard to slavery.
  • The “Sherlock Holmes” Conclusion. Sometimes writers will state the thesis for the very first time in the conclusion. You might be tempted to use this strategy if you don’t want to give everything away too early in your paper. You may think it would be more dramatic to keep the reader in the dark until the end and then “wow” them with your main idea, as in a Sherlock Holmes mystery. The reader, however, does not expect a mystery, but an analytical discussion of your topic in an academic style, with the main argument (thesis) stated up front. Example: (After a paper that lists numerous incidents from the book but never says what these incidents reveal about Douglass and his views on education): So, as the evidence above demonstrates, Douglass saw education as a way to undermine the slaveholders’ power and also an important step toward freedom.
  • The “America the Beautiful”/”I Am Woman”/”We Shall Overcome” Conclusion. This kind of conclusion usually draws on emotion to make its appeal, but while this emotion and even sentimentality may be very heartfelt, it is usually out of character with the rest of an analytical paper. A more sophisticated commentary, rather than emotional praise, would be a more fitting tribute to the topic. Example: Because of the efforts of fine Americans like Frederick Douglass, countless others have seen the shining beacon of light that is education. His example was a torch that lit the way for others. Frederick Douglass was truly an American hero.
  • The “Grab Bag” Conclusion. This kind of conclusion includes extra information that the writer found or thought of but couldn’t integrate into the main paper. You may find it hard to leave out details that you discovered after hours of research and thought, but adding random facts and bits of evidence at the end of an otherwise-well-organized essay can just create confusion. Example: In addition to being an educational pioneer, Frederick Douglass provides an interesting case study for masculinity in the American South. He also offers historians an interesting glimpse into slave resistance when he confronts Covey, the overseer. His relationships with female relatives reveal the importance of family in the slave community.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Douglass, Frederick. 1995. Narrative of the Life of Frederick Douglass, an American Slave, Written by Himself. New York: Dover.

Hamilton College. n.d. “Conclusions.” Writing Center. Accessed June 14, 2019. https://www.hamilton.edu//academics/centers/writing/writing-resources/conclusions .

Holewa, Randa. 2004. “Strategies for Writing a Conclusion.” LEO: Literacy Education Online. Last updated February 19, 2004. https://leo.stcloudstate.edu/acadwrite/conclude.html.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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Early Childhood Stimulation in Toddler Twins : a Case Study

Agustin, M., Puspita, R. D., Inten, D. N., & Setiyadi, R. (2021). Early Detection and Stimulation of Multiple Intelligences in Kindergarten. International Journal of Instruction, 14(4), 873-890.

Brentani, A., Walker, S., Chang-Lopez, S., Grisi, S., Powell, C., & Fink, G. (2021). A home visit-based early childhood stimulation programme in Brazil—a randomized controlled trial. Health policy and planning, 36(3), 288-297.

Darmawati, I. (2021). Peran Keluarga dalam Penerapan Protokol Kesehatan Selama Pandemi Covid-19. Tren dan isu kesehatan di masa pandemi Covid, 19.

Hidayat, H., & Arini, F. D. (2022). Exploring Factors of the Parent-Teacher Partnership Affecting Learning Outcomes: Empirical Study in the Early Childhood Education Context. International Journal of Instruction, 15(4).

Hurlock, E. B. (1978). Child psychology. Tokyo: McGraw-Hill Publishing Company, Ltd.

Kementrian Kesehatan RI. 2012. Pedoman Pelaksanaan Stimulasi, Deteksi Dan Intervensi Dini umbuh Kembang Anak Ditingkat Pelayanan Kesehatan Dasar. Jakarta: Departemen Kesehatan RI.

Khatib, M. N., Gaidhane, A., Ahmed, M., Saxena, D., & Syed, Z. Q. (2020). Early childhood development programs in low middle-income countries for rearing healthy children: A systematic review. Journal of Clinical & Diagnostic Research, 14(1).

Nur, L., Stephani, M. R., & Malik, A. A. (2022). Teachers' Perspectives on Promoting Physical Activity in Early Childhood Education: A Pilot Study in Indonesia. International Journal of Human Movement and Sports Sciences, 10(6), 1189-96.

Rakhman, F., Pratiwi, E. Y. R., Darmawati, I., & Muliyanti, M. (2022). Urgensi Metode Hypnoparenting Dalam Mendidik Anak Usia Dini. Al-Madrasah: Jurnal Pendidikan Madrasah Ibtidaiyah, 6(3), 468-475.

Raballo, A., & Poletti, M. (2020). Advances in early identification of children and adolescents at risk for psychiatric illness. Current Opinion in Psychiatry, 33(6), 611-617.

Riskesdas (2018). Laporan Riset Kesehatan Dasar Tahun 2018. Jakarta: Badan Penelitian dan Pengembangan Kesehatan Kementrian Kesehatan RI

Rosen, M. L., Hagen, M. P., Lurie, L. A., Miles, Z. E., Sheridan, M. A., Meltzoff, A. N., & McLaughlin, K. A. (2020). Cognitive stimulation as a mechanism linking socioeconomic status with executive function: A longitudinal investigation. Child development, 91(4), e762-e779.

Siswanti, R., Nopitasari, D., Rizki, E., Sari, N. S. N. I., Mulyani, S., & Suryaman, R. (2022). The Effect of Puzzle Stimulation on Fine Motor Development of Preschool Aged Children. Indian Journal of Forensic Medicine & Toxicology, 16(4), 390-394.

Tulasih, S., Yussof, H. B., & Kristiawan, M. (2022). Stimulation of Language Skills for Early Childhood through the Picture Story Method. Bulletin of Early Childhood, 1(1), 42-57.

Utaminingtyas, F. (2019). Pengaruh pemberian stimulasi terhadap perkembangan anak umur 12-24 bulan di Desa Lembu, Bancak. Jurnal Kebidanan, 117-127.

Weisbecker, R. L., & DiLalla, L. F. (2024). Parent versus child influences on differential parent warmth and discipline within twin pairs. Developmental Psychology.

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Antioxidants

a variety of berries and their stems including blueberries, gooseberries, red currants, white currants

Often used as a marketing buzzword, learn about the role of antioxidants beyond the hype, and some of the research on health and disease prevention.

Jump to: – What are antioxidants? – Health benefits of antioxidants: what’s the buzz? – Studies of antioxidant supplements and disease prevention – Antioxidants in food – Bottom line on antioxidants and disease prevention

What are antioxidants?

The body’s trillion or so cells face formidable threats, from lack of food to infection with a virus. Another constant threat comes from chemicals called free radicals. In very high levels, they are capable of damaging cells and genetic material. The body generates free radicals as the inevitable byproducts of turning food into energy. Free radicals are also formed after exercising or exposure to cigarette smoke, air pollution, and sunlight. [1]

Free radicals come in many shapes, sizes, and chemical configurations. What they all share is a voracious appetite for electrons, stealing them from any nearby substances that will yield them. This electron theft can radically alter the “loser’s” structure or function. Free radical damage can change the instructions coded in a strand of DNA. It can make a circulating low-density lipoprotein (LDL, sometimes called bad cholesterol) molecule more likely to get trapped in an artery wall. Or it can alter a cell’s membrane, changing the flow of what enters the cell and what leaves it. An excessive chronic amount of free radicals in the body causes a condition called oxidative stress, which may damage cells and lead to chronic diseases. [2]

We aren’t defenseless against free radicals. The body, long used to this relentless attack, makes many molecules that quench free radicals as surely as water douses fire. We also extract free-radical fighters from food. These defenders are labeled “antioxidants.” They work by generously giving electrons to free radicals without turning into electron-scavenging substances themselves. They are also involved in mechanisms that repair DNA and maintain the health of cells.

There are hundreds, probably thousands, of different substances that can act as antioxidants. The most familiar ones are vitamin C , vitamin E , beta-carotene , and other related carotenoids, along with the minerals selenium and manganese. They’re joined by glutathione, coenzyme Q10, lipoic acid, flavonoids, phenols, polyphenols, phytoestrogens, and many more.  Most are naturally occurring, and their presence in food is likely to prevent oxidation or to serve as a natural defense against the local environment.

But using the term “antioxidant” to refer to substances is misleading. It is really a chemical property, namely, the ability to act as an electron donor. Some substances that act as antioxidants in one situation may be pro-oxidants—electron grabbers—in a different situation. Another big misconception is that antioxidants are interchangeable. They aren’t. Each one has unique chemical behaviors and biological properties. They almost certainly evolved as parts of elaborate networks, with each different substance (or family of substances) playing slightly different roles. This means that no single substance can do the work of the whole crowd.

Health benefits of antioxidants: what’s the buzz?

Antioxidants came to public attention in the 1990s, when scientists began to understand that free radical damage was involved in the early stages of artery-clogging atherosclerosis. It was also linked to cancer , vision loss, and a host of other chronic conditions. Some studies showed that people with low intakes of antioxidant-rich fruits and vegetables were at greater risk for developing these chronic conditions than were people who ate plenty of those foods. Clinical trials began testing the impact of single substances in supplement form, especially beta-carotene and vitamin E, as weapons against chronic diseases.

Even before the results of these trials were in, the media and the supplement and food industries began to hype the benefits of “antioxidants.” Frozen berries, green tea, and other foods labeled as being rich in antioxidants began popping up in stores. Supplement makers touted the disease-fighting properties of all sorts of antioxidants.

The research results were mixed, but most did not find the hoped-for benefits. Most research teams reported that vitamin E and other antioxidant supplements didn’t protect against heart disease or cancer. [3] One study even showed that taking beta-carotene supplements actually increased the chances of developing lung cancer in smokers. On the other hand, some trials reported benefits; for example, after 18 years of follow-up, the Physicians’ Health Study found that taking beta-carotene supplements was associated with a modest reduction in the rate of cognitive decline. [4]

These mostly disappointing results haven’t stopped food companies and supplement sellers from banking on antioxidants. Antioxidants are still added to breakfast cereals, sports bars, energy drinks, and other processed foods , and they are promoted as additives that can prevent heart disease, cancer, cataracts, memory loss, and other conditions.

Often the claims have stretched and distorted the data: While it’s true that the package of antioxidants, minerals , fiber , and other substances found naturally in fruits , vegetables , and whole grains helps prevent a variety of chronic diseases , it is unlikely that high doses of antioxidant supplements can accomplish the same feat.

pomegranate, oats, blueberries, almonds, cilantro, basil flax seeds, matcha, brussels sprouts, turmeric, rolled oats, jasmine peal tea, soybeans,

Antioxidant foods hyped to super-status

Antioxidant supplements and disease prevention: little supportive evidence.

Randomized placebo-controlled trials, which can provide the strongest evidence, offer little support that taking vitamin C, vitamin E, beta-carotene, or other single antioxidants provides substantial protection against heart disease, cancer, or other chronic conditions. The results of the largest trials have been mostly negative.

Vitamin E, beta-carotene, and other antioxidants in supplement form aren’t the silver bullet against heart disease and stroke that researchers were hoping for.  A modest effect of vitamin E has been found in some studies but more research is needed.

  • In the Women’s Health Study, 39,876 initially healthy women took 600 IU of natural source vitamin E or a placebo every other day for 10 years. At the study’s end, the rates of major cardiovascular events and cancer were no lower among those taking vitamin E than those taking the placebo. However, the trial did observe a significant 24% reduction in total cardiovascular mortality. Although this was not a primary endpoint for the trial, it nevertheless represents an important outcome. [6]
  • Earlier large vitamin E trials, conducted among individuals with previously diagnosed coronary disease or at high risk for it, generally showed no benefit. In the Heart Outcomes Prevention Evaluation (HOPE) trial, the rates of major cardiovascular events were essentially the same in the vitamin E (21.5%) and placebo (20.6%) groups, although participants taking vitamin E had higher risks of heart failure and hospitalization for heart failure. [7] In the Gruppo Italiano per lo Studio della Sopravvivenza nell’Infarto Miocardico (GISSI) trial, the results were mixed but mostly showed no preventive effects after more than three years of treatment with vitamin E among 11,000 heart attack survivors. [8] However, some studies suggest potential benefits among certain subgroups. A recent trial of vitamin E in Israel, for example, showed a marked reduction in coronary heart disease among people with type 2 diabetes who have a common genetic predisposition for greater oxidative stress. [9]
  • Beta-carotene, meanwhile, did not provide any protection against heart disease or stroke, as demonstrated by the Physicians’ Health Study. [10]
  • What about combinations? In the Supplementation en Vitamines et Mineraux Antioxydants (SU.VI.MAX) study, 13,017 French men and women took a single daily capsule that contained 120 mg vitamin C, 30 mg vitamin E, 6 mg beta-carotene, 100 mcg selenium, and 20 mg zinc, or a placebo, for seven and a half years. The vitamins had no effect on overall rates of cardiovascular disease. [11]
  • In the Women’s Antioxidant Cardiovascular Study, vitamin E, vitamin C, and beta-carotene had similar effects as a placebo on myocardial infarction, stroke, coronary revascularization, and cardiovascular death, although there was a modest and significant benefit for vitamin E among women with existing cardiovascular disease. [12]

A 2014 study from the Journal of Respiratory Research found that different isoforms of vitamin E (called tocopherols) had opposing effects on lung function. [13] The study analyzed data from the Coronary Artery Risk Development in Young Adults (CARDIA) cohort and measured serum levels of alpha- and gamma-tocopherol in 4,526 adults. Lung function was tested using spirometric parameters: higher parameters are indicative of increased lung function, while lower parameters are indicative of decreased lung function. The study found that higher serum levels of alpha-tocopherol were associated with higher spirometric parameters and that high serum levels of gamma-tocopherol were associated with lower spirometric parameters. Though the study was observational in nature, it confirmed the mechanistic pathway of alpha- and gamma-tocopherol in mice studies. [14]

When it comes to cancer prevention, the picture remains inconclusive for antioxidant supplements. Few trials have gone on long enough to provide an adequate test for cancer.

  • In the long-term Physicians’ Health Study, cancer rates were similar among men taking beta-carotene and among those taking a placebo. [10] Other trials have also largely shown no effect, including HOPE. [7]
  • The SU.VI.MAX randomized placebo-controlled trial showed a reduction in cancer risk and all-cause mortality among men taking an antioxidant cocktail (low doses of vitamins C and E, beta-carotene, selenium, and zinc) but no apparent effect in women, possibly because men tended to have low blood levels of beta-carotene and other vitamins at the beginning of the study. [11]
  • A randomized trial of selenium in people with skin cancer demonstrated significant reductions in cancer and cancer mortality at various sites, including colon, lung, and prostate. [15]  The effects were strongest among those with low selenium levels at baseline.
  • A six-year trial, the Age-Related Eye Disease Study (AREDS), found that a combination of vitamin C, vitamin E, beta-carotene, and zinc offered some protection against the development of advanced age-related macular degeneration, but not cataracts, in people who were at high risk of the disease. [16,17]
  • Lutein, a naturally occurring carotenoid found in green, leafy vegetables such as spinach and kale, may protect vision. However, relatively short trials of lutein supplementation for age-related macular degeneration have yielded conflicting findings. [18,19] A follow-up trial to the AREDS, the AREDS2, examined lutein/zeaxanthin supplementation on late age-related macular degeneration (AMD) in men and women for up to five years. [20] It found a favorable but not significant effect of the supplements on AMD.
  • A Cochrane review of 19 randomized controlled trials compared antioxidant vitamin/mineral supplements (multivitamin, vitamin E, lutein, zeaxanthin, zinc) with placebo or no intervention in people with AMD. [21] The participants were generally well-nourished. The study found that people taking the vitamins were less likely to progress to late-stage AMD and vision loss. However, the study authors noted that taking lutein and zeaxanthin alone or vitamin E alone did not have a beneficial effect on these eye conditions.
  • The Selenium and Vitamin E Cancer Prevention Trial (SELECT) Eye Endpoints Study, which followed 11,267 men for a mean of five years, did not find that vitamin E and selenium supplements, in combination or alone, protected from age-related cataracts. [22]
  • The Physicians’ Health Study II, a randomized trial giving 50 mg beta-carotene supplements or a placebo to 5,956 men older than 65 years, found that longer-term supplementation for at least 15 years provided cognitive benefits. [4]
  • The Prevention of Alzheimer’s Disease by Vitamin E and Selenium (PREADViSE) trial followed more than 3,700 men ages 60 and older for six years. It did not find that antioxidant supplements of vitamin E or selenium, alone or in combination, protected against dementia compared with a placebo. [23]
  • A meta-analysis of 68 antioxidant supplement trials found that taking beta-carotene and vitamin A and E supplements increased the risk of dying. [24] Although healthy participants were included in 21 of the trials, most of the studies included people who already had some type of serious illness. It was also difficult to compare interventions because the types of supplements, the dosages taken, and the length of time they were taken varied widely.
  • The same authors conducted another systematic review of 78 randomized clinical trials on antioxidant supplements including beta-carotene, vitamin A, vitamin C, vitamin E, and selenium (alone or in combination). [25]   Again, the majority of trials included people with various established diseases. The study found that both people who were healthy and those with diseases taking beta-carotene and vitamin E supplements had a higher rate of death. The duration of the studies varied widely from one month to 12 years, with varying dosages.

If antioxidants were harmless, it wouldn’t much matter if you took them “just in case.” A few studies, though, have raised the possibility that taking antioxidant supplements, either single agents or combinations, could interfere with health.

  • The first inkling came in a large trial of beta-carotene conducted among men in Finland who were heavy smokers, and therefore at high risk for developing lung cancer. The trial was stopped early when researchers saw a significant increase in lung cancer among those taking the supplement compared to those taking the placebo. [26]
  • In another trial among heavy smokers and people exposed to asbestos, beta-carotene was combined with vitamin A. Again, an increase in lung cancer was seen in the supplement group. [27] Not all trials of beta-carotene show this harmful effect, however. In the Physicians’ Health Study, which included few active smokers, no increase in lung cancer or any other adverse affect was seen even after 18 years of follow-up. [10]
  • In the SU.VI.MAX trial, rates of skin cancer were higher in women who were assigned to take vitamin C, vitamin E, beta-carotene, selenium, and zinc. [28]
  • Vitamin E supplements were found to significantly increase the risk of prostate cancer by 17% in healthy men compared with those who took a placebo. These results came from the Selenium and Vitamin E Cancer Prevention Trial (SELECT) that followed 35,533 men for up to 12 years. [29]

High-dose antioxidant supplements can also interfere with medicines. Vitamin E supplements can have a blood-thinning effect and increase the risk of bleeding in people who are already taking blood-thinning medicines. Some studies have suggested that taking antioxidant supplements during cancer treatment might interfere with the effectiveness of the treatment. Inform your doctor if starting supplements of any kind. [1]

Antioxidants in food

One possible reason why many studies on antioxidant supplements do not show a health benefit is because antioxidants tend to work best in combination with other nutrients, plant chemicals, and even other antioxidants.

For example, a cup of fresh strawberries contains about 80 mg of vitamin C, a nutrient classified as having high antioxidant activity. But a supplement containing 500 mg of vitamin C (667% of the RDA) does not contain the plant chemicals (polyphenols) naturally found in strawberries like proanthocyanins and flavonoids, which also possess antioxidant activity and may team up with vitamin C to fight disease.  Polyphenols also have many other chemical properties besides their ability to serve as antioxidants.  There is a question if a nutrient with antioxidant activity can cause the opposite effect with pro-oxidant activity if too much is taken. This is why using an antioxidant supplement with a single isolated substance may not be an effective strategy for everyone.

Differences in the amount and type of antioxidants in foods versus those in supplements might also influence their effects. For example, there are eight chemical forms of vitamin E present in foods. However, vitamin E supplements typically only include one form, alpha-tocopherol. [1]

Epidemiological prospective studies show that higher intakes of antioxidant-rich fruits, vegetables, and legumes are associated with a lower risk of chronic oxidative stress-related diseases like cardiovascular diseases , cancer, and deaths from all causes. [30-33] A plant-based diet is believed to protect against chronic oxidative stress-related diseases.  [2] It is not clear if this protective effect is due to the antioxidants, other substances in the foods, or a combination of both. The following are nutrients with antioxidant activity and the foods in which they are found:

  • Vitamin C : Broccoli, Brussels sprouts , cantaloupe, cauliflower, grapefruit, leafy greens (turnip, mustard, beet, collards), honeydew, kale , kiwi, lemon, orange, papaya, snow peas, strawberries, sweet potato , tomatoes, and bell peppers (all colors)
  • Vitamin E : Almonds , avocado, Swiss chard, leafy greens (beet, mustard, turnip), peanuts, red peppers, spinach (boiled), and sunflower seeds
  • Carotenoids including beta-carotene and lycopene: Apricots, asparagus, beets, broccoli, cantaloupe, carrots, bell peppers, kale , mangos, turnip and collard greens, oranges, peaches, pink grapefruit, pumpkin, winter squash , spinach, sweet potato , tangerines, tomatoes, and watermelon
  • Selenium: Brazil nuts, fish, shellfish, beef, poultry, barley, brown rice
  • Zinc : Beef, poultry, oysters, shrimp, sesame seeds, pumpkin seeds, chickpeas , lentils , cashews, fortified cereals
  • Phenolic compounds: Quercetin ( apples , red wine, onions), catechins ( tea , cocoa , berries), resveratrol ( red and white wine , grapes, peanuts, berries), coumaric acid (spices, berries), anthocyanins (blueberries, strawberries)

Bottom line on antioxidants and disease prevention

Excessive free radicals contribute to chronic diseases including cancer, heart disease, cognitive decline, and vision loss. This doesn’t automatically mean that substances with antioxidant properties will fix the problem, especially if they are taken out of their natural context. The studies so far are inconclusive but generally don’t provide strong evidence that antioxidant supplements have a substantial impact on disease. Keep in mind that most of the trials conducted have had fundamental limitations due to their relatively short duration and inclusion of people with existing disease. At the same time, abundant evidence suggests that eating whole in fruits , vegetables , and whole grains —all rich in networks of naturally occurring antioxidants and their helper molecules—provides protection against many scourges of aging.

  • National Center for Complementary and Integrative Health (NCCIH). Antioxidants: In Depth. https://nccih.nih.gov/health/antioxidants/introduction.htm Accessed 7/1/19.
  • Carlsen MH, Halvorsen BL, Holte K, Bøhn SK, Dragland S, Sampson L, Willey C, Senoo H, Umezono Y, Sanada C, Barikmo I. The total antioxidant content of more than 3100 foods, beverages, spices, herbs and supplements used worldwide. Nutrition journal . 2010 Dec;9(1):3.
  • Semba RD, Ferrucci L, Bartali B, Urpí-Sarda M, Zamora-Ros R, Sun K, Cherubini A, Bandinelli S, Andres-Lacueva C. Resveratrol levels and all-cause mortality in older community-dwelling adults. JAMA internal medicine . 2014 Jul 1;174(7):1077-84.
  • Grodstein F, Kang JH, Glynn RJ, Cook NR, Gaziano JM. A randomized trial of beta carotene supplementation and cognitive function in men: the Physicians’ Health Study II. Archives of internal medicine . 2007 Nov 12;167(20):2184-90.
  • USDA Oxygen Radical Absorbance Capacity (ORAC) of Selected Foods, Release 2 (2010).  http://www.orac-info-portal.de/download/ORAC_R2.pdf Accessed 7/1/2019.
  • Lee IM, Cook NR, Gaziano JM, Gordon D, Ridker PM, Manson JE, Hennekens CH, Buring JE. Vitamin E in the primary prevention of cardiovascular disease and cancer: the Women’s Health Study: a randomized controlled trial. JAMA . 2005 Jul 6;294(1):56-65.
  • Lonn E, Bosch J, Yusuf S, Sheridan P, Pogue J, Arnold JM, Ross C, Arnold A, Sleight P, Probstfield J, Dagenais GR. Effects of long-term vitamin E supplementation on cardiovascular events and cancer: a randomized controlled trial. JAMA . 2005 Mar;293(11):1338-47.
  • GISSI-Prevenzione Investigators. Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial. The Lancet . 1999 Aug 7;354(9177):447-55.
  • Milman U, Blum S, Shapira C, Aronson D, Miller-Lotan R, Anbinder Y, Alshiek J, Bennett L, Kostenko M, Landau M, Keidar S. Vitamin E supplementation reduces cardiovascular events in a subgroup of middle-aged individuals with both type 2 diabetes mellitus and the haptoglobin 2-2 genotype: a prospective double-blinded clinical trial. Arteriosclerosis, thrombosis, and vascular biology . 2008 Feb 1;28(2):341-7.
  • Hennekens CH, Buring JE, Manson JE, Stampfer M, Rosner B, Cook NR, Belanger C, LaMotte F, Gaziano JM, Ridker PM, Willett W. Lack of effect of long-term supplementation with beta carotene on the incidence of malignant neoplasms and cardiovascular disease. New England Journal of Medicine . 1996 May 2;334(18):1145-9.
  • Hercberg S, Galan P, Preziosi P, Bertrais S, Mennen L, Malvy D, Roussel AM, Favier A, Briançon S. The SU. VI. MAX Study: a randomized, placebo-controlled trial of the health effects of antioxidant vitamins and minerals. Archives of internal medicine . 2004 Nov 22;164(21):2335-42.
  • Cook NR, Albert CM, Gaziano JM, Zaharris E, MacFadyen J, Danielson E, Buring JE, Manson JE. A randomized factorial trial of vitamins C and E and beta carotene in the secondary prevention of cardiovascular events in women: results from the Women’s Antioxidant Cardiovascular Study. Archives of internal medicine . 2007 Aug 13;167(15):1610-8.
  • Marchese ME, Kumar R, Colangelo LA, Avila PC, Jacobs DR, Gross M, Sood A, Liu K, Cook-Mills JM. The vitamin E isoforms α-tocopherol and γ-tocopherol have opposite associations with spirometric parameters: the CARDIA study. Respiratory research . 2014 Dec;15(1):31.
  • Berdnikovs S, Abdala-Valencia H, McCary C, Somand M, Cole R, Garcia A, Bryce P, Cook-Mills JM. Isoforms of vitamin E have opposing immunoregulatory functions during inflammation by regulating leukocyte recruitment. The Journal of Immunology . 2009 Apr 1;182(7):4395-405.
  • Duffield-Lillico AJ, Reid ME, Turnbull BW, Combs GF, Slate EH, Fischbach LA, Marshall JR, Clark LC. Baseline characteristics and the effect of selenium supplementation on cancer incidence in a randomized clinical trial: a summary report of the Nutritional Prevention of Cancer Trial. Cancer Epidemiology and Prevention Biomarkers . 2002 Jul 1;11(7):630-9.
  • Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Archives of ophthalmology . 2001 Oct;119(10):1417.
  • Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E and beta carotene for age-related cataract and vision loss: AREDS report no. 9. Archives of Ophthalmology . 2001 Oct;119(10):1439.
  • Richer S, Stiles W, Statkute L, Pulido J, Frankowski J, Rudy D, Pei K, Tsipursky M, Nyland J. Double-masked, placebo-controlled, randomized trial of lutein and antioxidant supplementation in the intervention of atrophic age-related macular degeneration: the Veterans LAST study (Lutein Antioxidant Supplementation Trial). Optometry-Journal of the American Optometric Association . 2004 Apr 1;75(4):216-29.
  • Bartlett HE, Eperjesi F. Effect of lutein and antioxidant dietary supplementation on contrast sensitivity in age-related macular disease: a randomized controlled trial. European journal of clinical nutrition . 2007 Sep;61(9):1121.
  • Chew EY, Clemons TE, SanGiovanni JP, Danis RP, Ferris FL, Elman MJ, Antoszyk AN, Ruby AJ, Orth D, Bressler SB, Fish GE. Secondary analyses of the effects of lutein/zeaxanthin on age-related macular degeneration progression: AREDS2 report No. 3. JAMA ophthalmology . 2014 Feb 1;132(2):142-9.
  • Evans JR, Lawrenson JG. Antioxidant vitamin and mineral supplements for slowing the progression of age‐related macular degeneration. Cochrane Database of Systematic Reviews . 2017(7).
  • Christen WG, Glynn RJ, Gaziano JM, Darke AK, Crowley JJ, Goodman PJ, Lippman SM, Lad TE, Bearden JD, Goodman GE, Minasian LM. Age-related cataract in men in the selenium and vitamin e cancer prevention trial eye endpoints study: a randomized clinical trial. JAMA ophthalmology . 2015 Jan 1;133(1):17-24.
  • Kryscio RJ, Abner EL, Caban-Holt A, Lovell M, Goodman P, Darke AK, Yee M, Crowley J, Schmitt FA. Association of antioxidant supplement use and dementia in the prevention of Alzheimer’s disease by vitamin E and selenium trial (PREADViSE). JAMA neurology . 2017 May 1;74(5):567-73.
  • Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis. JAMA . 2007 Feb 28;297(8):842-57.
  • Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane database of systematic reviews . 2012(3).
  • Albanes D, Heinonen OP, Taylor PR, Virtamo J, Edwards BK, Rautalahti M, Hartman AM, Palmgren J, Freedman LS, Haapakoski J, Barrett MJ. α-Tocopherol and β-carotene supplements and lung cancer incidence in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study: effects of base-line characteristics and study compliance. JNCI: Journal of the National Cancer Institute . 1996 Nov 6;88(21):1560-70.
  • Omenn GS, Goodman GE, Thornquist MD, Balmes J, Cullen MR, Glass A, Keogh JP, Meyskens Jr FL, Valanis B, Williams Jr JH, Barnhart S. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease. New England journal of medicine . 1996 May 2;334(18):1150-5.
  • Hercberg S, Ezzedine K, Guinot C, Preziosi P, Galan P, Bertrais S, Estaquio C, Briançon S, Favier A, Latreille J, Malvy D. Antioxidant supplementation increases the risk of skin cancers in women but not in men. The Journal of nutrition . 2007 Sep 1;137(9):2098-105.
  • Klein EA, Thompson IM, Tangen CM, Crowley JJ, Lucia MS, Goodman PJ, Minasian LM, Ford LG, Parnes HL, Gaziano JM, Karp DD. Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT). JAMA . 2011 Oct 12;306(14):1549-56.
  • Joshipura KJ, Hu FB, Manson JE, Stampfer MJ, Rimm EB, Speizer FE, Colditz G, Ascherio A, Rosner B, Spiegelman D, Willett WC. The effect of fruit and vegetable intake on risk for coronary heart disease. Annals of internal medicine . 2001 Jun 19;134(12):1106-14.
  • Bhupathiraju SN, Wedick NM, Pan A, Manson JE, Rexrode KM, Willett WC, Rimm EB, Hu FB. Quantity and variety in fruit and vegetable intake and risk of coronary heart disease. The American journal of clinical nutrition . 2013 Oct 2;98(6):1514-23.
  • Aune D, Giovannucci E, Boffetta P, Fadnes LT, Keum N, Norat T, Greenwood DC, Riboli E, Vatten LJ, Tonstad S. Fruit and vegetable intake and the risk of cardiovascular disease, total cancer and all-cause mortality—a systematic review and dose-response meta-analysis of prospective studies. International journal of epidemiology . 2017 Jun 1;46(3):1029-56.
  • Miller V, Mente A, Dehghan M, Rangarajan S, Zhang X, Swaminathan S, Dagenais G, Gupta R, Mohan V, Lear S, Bangdiwala SI. Fruit, vegetable, and legume intake, and cardiovascular disease and deaths in 18 countries (PURE): a prospective cohort study. The Lancet . 2017 Nov 4;390(10107):2037-49.

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Zabbix Blog

Case Study: Monitoring with Zabbix and AI

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Artificial intelligence (AI) and data monitoring are working together to digitally transform relationships, businesses, and people. In telecommunications, predictive analysis based on data collection plays a crucial role in development. Starting with version 6.0 of Zabbix, users have benefited from updates in predictive functions and machine learning, which make it possible for them to study the data monitored by Zabbix and integrate it with AI modules.

Danilo Barros, co-founder of Lunio (a Zabbix Certified Partner in Brazil), presented the results of using Zabbix combined with telecom data monitoring through AI and machine learning at Zabbix Conference Brazil in 2022. Keep reading to get the whole story!

Table of Contents

The scenario

With over 600 OLTs (Optical Line Terminals – the fiberoptic infrastructure used by internet providers) as well as 400,000 customers across more than 800 cities and 20 states in Brazil, Lunio’s client manages a staggering amount of data. This monitoring is essential for smooth operations and to guarantee that there are no negative impacts on users and no overload for customer service agents in the event of accidents.

A primary challenge for telecom clients is the overload of calls to customer service in the event of massive network incidents. With so many customers, every precaution must be taken to avoid clogging phone lines during outages or service failures.

“You can’t achieve customer satisfaction under such circumstances, and the Net Promoter Score (NPS) drops drastically.”   Danilo Barros, co-founder of Lunio

Mapping needs

Considering the client’s operational structure, a series of customer needs were identified, focusing on six main points:

1. Automation: With notifications via digital channels for each event 2. Speed: Aiming for improved customer service 3. Operational costs: Budget optimization 4. Root cause analysis: Quick identification of the cause of events 5. Predictability: The ability to analyze problems and identify trends 6. Reporting: Identifying incidents and following regulations from ANATEL (National Telecommunications Agency)

With these interests in mind, it was possible to reassess the use of tools previously employed by the telecom client, which at the time served unique functions in the process. Each tool had its usage and information verification time, which could impact hundreds of users in a massive-scale incident. The key challenges identified by the Lunio team included:

  • Integrations: Systems needed to be interconnected
  • Integrity: Constant data updates
  • Topology: With system mapping through specific programs
  • Business rules: Respecting the development of local processes
  • Performance: The monitoring and automation of 600,000 assets
  • High availability: Dozens of data centers catering to local demand

Once the needs and challenges were identified, it was time to promote change within the client. By integrating systems and using Zabbix to monitor over 600,000 items, understand incidents, and predict potential future errors, the technical teams at Lunio created LunioAI, a “super attendant” with analytical and predictive capabilities as well as the ability to continuously learn.

“This guy (LunioIA) learns from each event, understanding each topology that occurs in the client’s network.”   Danilo Barros, co-founder of Lunio

In the initial response tests, LunioAI was able to analyze and evaluate massive events in a minute and a half. Over time, this was reduced to 30 seconds, making the return to the technical team increasingly swift and positively impacting incident resolution.

The results

Throughout the development and improvement of LunioIA, the operations chain was involved in predictive analyses of potential events on the network, providing technical professionals with the information needed to perform preventive maintenance on monitored items.

LunioIA considers data from integrated systems, FTTH (fiber to the home) environments, data centers, and items, all as part of the Zabbix monitoring environment. It can then diagnose events, understand the severity of an event, and find resolution points – without the need for human resources in the process.

As a result, when physical attendants were contacted by customers experiencing difficulties with the service, instead of going through the entire process to understand what happened, the attendant could perform a search using the customer’s CPF (Individual Taxpayer Registry Identification) and then access a summary of the events, causes, and solutions identified by artificial intelligence combined with data monitoring through Zabbix.

In conclusion

This example happens to come from the telecommunications industry, but it’s not difficult to see how the ability of Zabbix to integrate the data monitored by Zabbix with AI modules can benefit companies in almost any industry.

You can find out more about what we can do across a variety of industries by visiting our website or requesting a demo.

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Fecal Microbiota Transplantation (FMT) as an Adjunctive Therapy for Depression—Case Report

Jessica p. k. doll.

1 Department of Psychiatry (UPK), University of Basel, Basel, Switzerland

Jorge F. Vázquez-Castellanos

2 Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium

Anna-Chiara Schaub

Nina schweinfurth, cedric kettelhack, else schneider, gulnara yamanbaeva, laura mählmann, serge brand.

3 Center for Affective, Stress- and Sleep Disorders (ZASS), Psychiatric Clinics (UPK), University of Basel, Basel, Switzerland

4 Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

5 Substance Abuse Prevention Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

6 Division of Sport Science and Psychosocial Health, Department of Sport, Exercise, and Health, University of Basel, Basel, Switzerland

7 Department of Psychiatry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

Christoph Beglinger

8 Department of Research, St. Clara Hospital, Basel, Switzerland

Stefan Borgwardt

9 Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany

Jeroen Raes

André schmidt, undine e. lang, associated data.

The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.

Depression is a debilitating disorder, and at least one third of patients do not respond to therapy. Associations between gut microbiota and depression have been observed in recent years, opening novel treatment avenues. Here, we present the first two patients with major depressive disorder ever treated with fecal microbiota transplantation as add-on therapy. Both improved their depressive symptoms 4 weeks after the transplantation. Effects lasted up to 8 weeks in one patient. Gastrointestinal symptoms, constipation in particular, were reflected in microbiome changes and improved in one patient. This report suggests further FMT studies in depression could be worth pursuing and adds to awareness as well as safety assurance, both crucial in determining the potential of FMT in depression treatment.

Introduction

Major depressive disorder (MDD) is an illness affecting more than 264 million people worldwide ( 1 ) and influencing functioning and quality of life (QoL) ( 2 ). Despite advancements in the development of therapeutics, current treatments have not reached optimal efficacy and approximately one third of patients do not respond to treatment after two or more trials of antidepressant medication ( 3 , 4 ). Therefore, the identification of new treatment options is crucial.

Recently, interest has been drawn toward the importance of the biochemical signaling between the gastrointestinal (GI) and the central nervous system, also known as the microbiome-gut-brain axis (MGBA) ( 5 – 9 ). Several studies have linked the gut microbiome to depression ( 6 , 8 – 11 ). The gut microbiota composition appears to be altered in depressed people ( 12 – 15 ), presenting predominance of potentially harmful bacterial groups and/or reduction in beneficial bacterial groups ( 12 ). Such dysbiosis could be related to depressive symptoms ( 16 , 17 ), as the MGBA is a bi-directional pathway, which involves multiple communication modalities, including metabolites, the immune system or the vagus nerve ( 8 , 10 , 18 , 19 ). Together, these studies feed the hypothesis that modification of the gut microbiome could decrease MDD symptoms. There are various ways to manipulate the gut microbiome, such as administration of prebiotics ( 20 – 22 ), probiotics ( 21 , 22 ), postbiotics ( 22 ), or fecal microbiome transplantation (FMT) ( 23 ). Preclinical evidence showed that adult germ-free rodents receiving fecal samples from MDD-patients showed increased depressive-like behavior compared to controls ( 17 , 23 ). Therefore, transplanting healthy fecal microbiome to MDD-patients could potentially ameliorate depressive symptoms. The intention of FMT is to introduce a beneficial microbial gut community by transferring intestinal microbiota from a healthy donor to a patient.

FMT has proven to be an effective treatment for recurrent Clostridium difficile infection ( rCDI ) ( 24 , 25 ). To our best knowledge, in MDD only one case treated with FMT has been reported so far ( 26 ).

Therefore, we initiated a randomized controlled trial (RCT), testing the efficacy of oral frozen FMT-capsules as adjuvant therapy in patients with moderate/severe MDD at the University Psychiatric Clinics Basel (UPK). While our RCT was running, the Food and Drug Administration released a safety alert regarding FMT (see Supplementary Methods for details) and we decided to cease the study for safety reasons after including a total of four patients. In the present article, we report clinical and safety results from two cases that had already received the active product.

Case Descriptions

Both patients were women and between 50 and 60 years old ( Table 1 ). Before starting the intervention, both received treatment as usual (TAU), which included pharmacological treatment, psychotherapy and additional medical-therapeutical treatments ( Figure 1 and Supplementary Tables 1, 2 . Changes in their treatment took place based on medical indication and patients' preferences.

Sociodemographic information.

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Timeline with relevant timepoints from the episode of study and care.

Patient 1 had a diagnosis of MDD and chronic constipation. According to the patient, her first depressive episode started in adolescence, with a suicide attempt later in life. She was diagnosed with MDD in 2006 and had been hospitalized twice in her life. Depression is common in her family, with two male second-degree relatives having suffered from it, one deceased by suicide. At the time of baseline assessment, the patient had been in therapy as an inpatient for almost 3 months and treated for depression and constipation with persevering symptoms (see Supplementary Table 1 ).

Patient 2 had a diagnosis of MDD. She was diagnosed with depression in 1980 and has been hospitalized twice since then. A family history of depression is unknown. After more than 2 months of inpatient treatment, the patient's symptoms persevered. She was medicated with antidepressants and benzodiazepines ( Supplementary Table 2 ). At time of FMT intervention, the patient was suffering from negative emotions and GI symptoms, such as flatulence and constipation. For a more detailed description of the patients (see Supplementary Case Description ).

Diagnostic Assessment and Study Design

The RCT was approved by the local ethics committee (Ethikkommission Nordwest- und Zentralschweiz) and was conducted in accordance with the principles of the Declaration of Helsinki and the International Conference on Harmonization Tripartite Guideline on Good Clinical Practice. Eligible patients were informed about the study and provided written informed consent. The study was registered at ClinicalTrials.gov prior to study start (NCT03281004). MDD-patients were recruited from the UPK (Switzerland). At baseline, we assessed depressive symptoms [Hamilton Depression Rating Scale; HAMD ( 27 ) and Beck Depression Inventory-II; BDI II ( 28 )], GI-symptoms [Gastrointestinal Rating Scale; GSRS ( 29 )] and collected anthropometric and demographic data. Then the intake of oral frozen FMT-capsules followed. After the treatment, participants were observed and assessed on a weekly basis over a period of 4 weeks. After 4 weeks, post-intervention measurements were conducted. Additionally, an 8-week follow-up was performed. Stool samples were collected at baseline and 4 weeks after the intervention. For one of the patients, stool samples were available 8 weeks after the intervention ( Supplementary Material ).

Intervention

Patients were administered 30 oral frozen FMT-capsules within 90 min under the observation of a physician. Each active 30-capsule-dose consisted of 8.25 g donor stool, originating from a single donor, which was a different donor for each patient. For a detailed description of the methods (see Supplementary Methods ).

Both patients adhered to the intervention. They tolerated the oral frozen FMT-capsules well and did not report any serious adverse events (SAEs).

Depressive Symptoms

For patient 1, symptoms of depression improved, indicated by a decreased HAMD-score from 21 points at baseline to nine points 4 weeks post-intervention. At 8-week follow-up, the HAMD-score increased to 19 points ( Figure 2A ). For patient 2, the HAMD-score decreased from 31 to 10 points after 4 weeks and increased by two points after 8 weeks ( Figure 2A ). Thus, the FMT intervention resulted in a 4-week change score of 12 and 21 HAMD-points for patient 1 and 2, respectively, and an 8-week change score of 2 and 19 points, respectively ( Figure 2B ). As the present results come from two cases and do not allow for statistical comparison, we mapped our HAMD change scores together with meta-analysis results from Kirsch et al. ( 30 ) ( Supplementary Figures 1 , 2 ); methods and results can be found in the Supplementary Material . Additionally, we explored the depressive symptoms from two patients, who had received placebo. Both placebo-patients tolerated the placebo-capsules well. HAMD-scores from both placebo-patients only improved within the first 2 weeks after placebo-intake and increased back to baseline scores, which is visible in Supplementary Figures 3A,B (placebo 1: baseline 16, post-intervention 16, follow-up 9; placebo 2: baseline 22, post-intervention 22, follow-up not available).

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(A) HAMD-scores for patient 1 and 2 over time, including cut-offs for depressive symptom severity. (B) Change scores of HAMD rating for both patients at 4-weeks compared to baseline and 8-weeks compared to baseline. A higher (and positive) change score indicates improvement of depressive symptoms as the change score was calculated by subtracting the score at post-intervention from the score at baseline (e.g., baseline score: 21, post-intervention score: 9, equals 21–9 = 12). (C) GSRS-scores for both patients over time; without cut-off for GI-symptom severity as different clusters of symptoms are defined by the GSRS (e.g., constipation) and classification of severity would be only possible for each symptom, not for the overall score. (D) GSRS change scores for both patients at 4-weeks compared to baseline and 8-weeks compared to baseline. (E) BDI-II-scores for both patients over time. (F) BDI-II change scores for both patients at 4-weeks compared to baseline and 8-weeks compared to baseline.

The BDI-II-scores dropped for both FMT-patients 4 weeks after FMT; from 50 to 31 points for patient 1 and from 24 to 12 points for patient 2, which results in change scores of 19 and 12, respectively. At 8-week follow-up, patient 1 reported a BDI-II-score of 34 and patient 2 a score of 9, resulting in change scores from baseline to follow-up of 16 and 15, respectively ( Figures 2E,F ).

Gastrointestinal Symptoms

Gastrointestinal symptoms improved in both patients ( Figure 2C ). Patient 1 benefitted by 56 points after 4 weeks, which worsened by only three points after 8 weeks. At baseline, she suffered from stomach pains, sickness, bloating, burping, and constipation. All symptoms improved over time. Patient 2 reported only a slight improvement of three points 4-week post-FMT and continued reporting constipation and bloating. The patient slightly improved by three more points at 8-week follow-up ( Figures 2C,D ).

Microbiome Composition and Diversity

In both patients, moisture decreased over time [ Supplementary Figure 6A ; Mixed-effects model (MEM) ANOVA p adjusted < 0.05]. Our patients showed lower moisture levels than the ones reported in a healthy population ( 31 ) (Wilcoxon test: W = 50, p = 0.025, Supplementary Figure 7 ). The bacterial load reflected in the cell counts was constant among the three time points for both patients (MEM ANOVA p adjuste d = 1). Diversity analysis was done to measure the taxonomic evenness (Pielou index), the richness (the number of observed species) and the diversity (inversed Simpson and Shannon indices) after FMT. Both patients showed an increase in the Pielou index after FMT, suggesting an evolution toward a more even distribution of species ( Figure 3A ). The species richness was generally reduced upon intervention ( Figure 3B ) and sustained until week eight in patient 1 ( Figure 3B ). We found that patient 1 showed increased inversed Simpson and Shannon diversity ( Figures 3C,D ), whereas patient 2 showed decreased diversity ( Figures 3C,D ).

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Patients' microbiome diversity. Mixed-effects models (MEM) of the genus level (A) Pielou evenness, (B) observed species, (C) inverse simpson, and (D) Shannon index, the alpha diversity estimators were modeled into a discrete manner and represent its results as boxplot and into a continuous way, representing the MEM slope into line-plots. The gray area into the continuous MEM represents the 95% confidence level. Patient 1 is displayed in purple, patient 2 in orange. (E) Mixed-effects models (MEM) of the ASV after the FMT intervention. The columns remarked in blue indicates the increase in the abundance of the ASV of patient 1, patient 2, and when the increase is congruent between both. Similarly, the columns remarked in blue indicates the decrease of the ASV in time. The blue scale represents the MEM positive coefficient; in red, the negative. The ASV was set as a putative biomarker if both the continuous and discrete mixed-effect-model time coefficients were significant (ANOVA < 0.05).

The FMT intervention revealed a different effect on the bacterial composition of the two patients. Patient 1 maintained the Ruminococcus enterotype over all time points; while patient 2 switched from the Ruminococcus to the Bacteroides-2-enterotype 4 weeks post-intervention ( Supplementary Figure 8 ), indicating a dysbiotic microbial composition previously linked to fast transit and inflammation ( 31 , 32 ). The switch in the bacterial composition was also associated with an increase of the fecal calprotectin levels, which was higher than the ones reported in healthy subjects ( Supplementary Figure 9A ) ( 31 ). However, the bacterial load increased in patient 2 4 weeks post-intervention; the cell counts increased to a level between the 75 and 95 quantile ( Supplementary Figure 9B ) ( 31 ).

The FMT intervention displayed different effects on the taxa abundance between the patients ( Figure 3E ). Patient 1 showed an increase of 13 amplicon sequence variants (ASV) of the genera Alistipes, Oscillibacter, Coprococcus, Clostridium IV , and the families Ruminococcaceae and Lachnospiraceae, the order Clostridiales, and the Firmicutes phylum ( Figure 3E ). Contrary, nine ASV from the genera Victivallis, Alistipes, Roseburia, Prevotella, Ruminococcus, Blautia , and Faecalibacterium and two ASV of the family Lachnospiraceae decreased after FMT ( Figure 3E ). Patient 2 showed an increase of ASV of the Ruminococcaceae family, including Ruminococcus E , and one ASV of the species Flavonifractor plautii ( Figure 3E ), which has been reported to be increased in MDD-patients ( 16 ). Patient 2 showed a decrease of five ASV of the genera Ruminococcus, Alistipes, Bifidobacterium, Oscillibacter , and the family Lachnospiraceae ( Figure 3E ). Further results are documented in the Supplementary Results .

Four weeks after the intake of oral frozen FMT-capsules, depressive symptoms improved in both patients, objectively graded from severe/moderate to mild depression ( 33 ); this is in line with previous results implicating that FMT reduced depressive symptoms in patients with irritable bowel syndrome (IBS) 4 weeks after treatment ( 34 ). Intriguingly, in the study by Kurokawa et al. ( 34 ), the clinical improvement after FMT was accompanied by increased gut bacteria diversity and decreased GI-symptoms. The relationship between IBS and depression seems to be bi-directional ( 34 , 35 ). Both of our patients were not formally diagnosed with IBS, but experienced GI-symptoms at baseline. While patient 1 was able to defecate regularly even 8 weeks after FMT, patient 2 was initially relieved, but after 4 weeks, again afflicted by constipation.

At baseline, both subjects showed a Ruminoccus enterotype bacterial composition and low fecal moisture, a proxy of slow transit time, and congruent with the prevalence of constipation in mood disorders ( 36 – 38 ). Patient 1 increased in diversity and maintained the Ruminococcus enterotype, indicating a better microbial response to FMT. However, the improvement of constipation in patient 1 is not reflected by the enterotype, since Ruminococcus is associated with slow transit time ( 36 , 37 ).

Compared to patient 2, patient 1 showed a higher abundance of short-chain fatty acid (SCFA) producers such as Butyrivibrio and Faecalibacterium that, along with Dialister , seem to be depleted in depressed people ( 16 ). Additionally, patient 1 showed an increase of species related to other healthy commensal species from the genera Methanobrevibacter and Sporobacter . Such species are related to low transit time and a healthy microbial establishment indicating the good recovery of the microbial community after oral frozen FMT-capsules. Moreover, patient 1 showed an increase and decrease of different ASV of the Alistipes genera after FMT. It is reasonable to assume that different Alistipes species may have different roles in host health; it has been reported that the decrease in Alistipes exerts an immunoregulatory effect and contributes to the decrease in SCFA which are suggested to have anti-depressant effects ( 39 , 40 ). Simultaneously, Alistipes are increased in depressed subjects ( 41 ).

Patient 2 still experienced constipation after the oral frozen FMT-capsules. It has been reported that prolonged constipation leads to a dysbiotic microbial configuration ( 42 , 43 ); indeed, patient 2 showed increased fecal calprotectin and switched to the Bacteroides-2-enterotype. Although until now this enterotype has mostly been linked to fast transit, constipated Bacteroides-2-individuals do exist (Raes, unpublished results). This patient's bacterial community showed an increase of species of the Flavonifractor genus, which is related to depression ( 16 , 31 , 44 ), and an increase of species of the Streptococcus genus, which is associated with high calprotectin and pro-inflammatory conditions ( 31 ). We assume that prolonged constipation in depressed people may have compromised the effectiveness of the oral frozen FMT-capsules by preventing the engraftment of the healthy microbial commensal species. A previous case report of FMT, as mono-treatment for depression and introduced via colonoscopy, reported a MDD-patient who also suffered from constipation ( 26 ). Interestingly, 4 days after FMT, the patient's GI- and depressive symptoms improved and persevered until 6 months after FMT ( 26 ).

The positive depression outcome did not persevere for both of our patients. Objective rating of the first patient's depressive condition, who improved GI conditions, indicated moderate depression at 8-week follow-up. Contrary, patient 2, who did not improve greatly on GI conditions, remained within the range of mild depression with a tendency to increase depressive symptoms. A study recently reported significant improvement of QoL and fatigue in IBS-patients 3 months after receiving FMT ( 45 ), which implicates a long-lasting positive effect of FMT compared to our results. They also found dose-dependent effects and that improvement in QoL and fatigue was not entirely in line with improvement of GI symptoms. FMT results on depressive and GI symptoms are conflicting, and RCTs investigating FMT in depressed patients are lacking. While some studies found improvement in depressive symptoms and QoL after FMT ( 34 , 45 ), there is also evidence of QoL and depressive symptoms not being affected by FMT ( 46 ).

One important factor for such mixed results is the general heterogeneity of illness presentation in MDD and IBS populations. As FMT success might depend on the recipient's microbial composition before FMT or on the microbial resemblance of the donor and the recipient, identifying subgroups of depressed patients might be crucial ( 47 ). Another reason could be the differing methodology between studies, such as choosing one (super)donor ( 45 ) or several donors ( 46 ), the FMT administration (e.g., oral capsule or colonoscopy) ( 48 , 49 ), or the formulation (e.g., frozen or fresh) ( 24 , 50 ). Other arising questions regard the optimal dose and durability of FMT ( 45 ). Barbara and Ianiro ( 50 ) discuss such issues of FMT methodology.

Notably, although the small participant number precludes statistical group comparison, the HAMD-scores of the two FMT and the two placebo-patients present interesting descriptive results. We would expect an improvement in depressive symptoms over time as the patients received TAU. Nonetheless, the two placebo participants presented only a 2-week improvement after placebo-capsule intake, which then relapsed to baseline scores. This might be attributed to the placebo effect, especially as one of the placebo participants thought she had received the active product. The other placebo patient reported increased depressive symptoms, which even restrained her from coming to the post-intervention assessment. Combined with the results from the FMT-patients, these results indicate that frozen oral FMT-capsules as add-on therapy might have the potential to improve depressive symptoms.

Critically, the report of cases suffering from SAEs after FMT raises the importance of extensive donor screening and cautious selection of FMT-patients ( 50 ). To overcome these issues, more large-scale controlled clinical studies are needed, investigating gut microbiota modulation in depression, gaining knowledge of its underlying mechanisms, neuroactive potential and beneficial, and harmful microbes and eventually, reconstituting microbes in the laboratory. This would make safety control, retraceability, and substantial FMT production possible ( 50 ). The resulting clinical trials could greatly improve our knowledge and eventually lead to the translation of controlled and specific FMT to clinical practice, and finally, improve depressed people's wellbeing.

Limitations

The current study reports some limitations, starting with the limited sample size. Second, both patients also had comorbidities, such as obesity and constipation, which both might be confounding factors as overweight and constipation seem to be associated with altered gut microbiota composition ( 51 , 52 ). They received FMT additionally to TAU which makes attribution of effects solely to FMT impossible; the outcome could be influenced by other pathologies or be the result of FMT and antidepressants working in synergy as antidepressants may influence the gut microbiota ( 53 ). Additionally, our patients were constipated at baseline, which might be due to medication as some of the medication might modify the transit time ( Supplementary Table 4 ). Third, we did not include any information about the patients' diets. However, diet has been found to be associated with depression ( 54 ) and is one of the most significant modulators of gut microbial community ( 55 ). A fourth limitation is the comparably low amount of donor stool (8.25 g). As the dose may play a crucial role in the effects, future research should also include dose-finding strategies. Further, although a previous study revealed that oral FMT-capsules are non-inferior to colonoscopy in efficacy in CDI -patients ( 25 ), the most efficient delivery mode in patients with depression needs to be established.

Lastly, the microbial resemblance of the donor and recipient may play an important role. As we do not have information on the donors' microbial composition, such comparison was impossible in this report. Future studies should include information on the donors' microbiome and compare it to the recipients' microbiome to identify subgroups for better treatment options.

Patients' Perspectives

Both patients were positive toward the intervention and had a feeling that they had received the active product. They felt better regarding their depressive symptoms, which is visible by the subjective measurement with the BDI-II ( Figures 2E,F ). In 2021 we contacted the patients via telephone, which was ~2.5 and 1.5 years after the intervention for patient 1 and 2, respectively. At that time, both were going on in their daily lives. One participant emphasized that one of her major treatment milestones was FMT.

Data Availability Statement

Ethics statement.

The studies involving human participants were reviewed and approved by Ethikkommission Nordwest- und Zentralschweiz. The patients/participants provided their written informed consent to participate in this study. Written informed consent was obtained from the individual(s) for the publication of any potentially identifiable images or data included in this article.

Author Contributions

AS: had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis and study supervision. LM, CB, SBo, AS, and UL: study concept and design. JD, JV-C, ACS, NS, CK, ES, GY, JR, and AS: acquisition, analysis, or interpretation of data. JD, JV-C, and AS: drafting the manuscript. All authors: critical revision of the manuscript for important intellectual content. JD and JV-C: statistical analysis. SBo, AS, and UL: obtained funding. LM, SBr, SBo, JR, AS, and UL: administrative, technical, or material support. All authors contributed to the article and approved the submitted version.

This work was supported by the Gertrud Thalmann-Fonds (SBo, UL), Seerave Foundation (UL), Kämpf-Bötschi Stiftung (UL), and Research Fund Junior Researchers of the University of Basel (Appln 3MS1041, AS). JV-C was supported by the postdoctoral fellowships fromthe Research Fund–Flanders (FWO 1236321N). The Raes lab was supported by VIB, KU Leuven, and the Rega Foundation.

Conflict of Interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher's Note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Acknowledgments

We thank Jan Klaproth for information gathering and support in preparing the present case report.

Supplementary Material

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpsyt.2022.815422/full#supplementary-material

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Organizing Your Social Sciences Research Paper: Writing a Case Study

  • Purpose of Guide
  • Design Flaws to Avoid
  • Independent and Dependent Variables
  • Glossary of Research Terms
  • Narrowing a Topic Idea
  • Broadening a Topic Idea
  • Extending the Timeliness of a Topic Idea
  • Academic Writing Style
  • Choosing a Title
  • Making an Outline
  • Paragraph Development
  • Executive Summary
  • The C.A.R.S. Model
  • Background Information
  • The Research Problem/Question
  • Theoretical Framework
  • Citation Tracking
  • Content Alert Services
  • Evaluating Sources
  • Reading Research Effectively
  • Primary Sources
  • Secondary Sources
  • Tiertiary Sources
  • What Is Scholarly vs. Popular?
  • Qualitative Methods
  • Quantitative Methods
  • Using Non-Textual Elements
  • Limitations of the Study
  • Common Grammar Mistakes
  • Writing Concisely
  • Avoiding Plagiarism
  • Footnotes or Endnotes?
  • Further Readings
  • Annotated Bibliography
  • Dealing with Nervousness
  • Using Visual Aids
  • Grading Someone Else's Paper
  • Types of Structured Group Activities
  • Group Project Survival Skills
  • Multiple Book Review Essay
  • Reviewing Collected Essays
  • Writing a Case Study
  • About Informed Consent
  • Writing Field Notes
  • Writing a Policy Memo
  • Writing a Research Proposal
  • Bibliography

The term case study refers to both a method of analysis and a specific research design for examining a problem, both of which are used in most circumstances to generalize across populations. This tab focuses on the latter--how to design and organize a research paper in the social sciences that analyzes a specific case.

A case study research paper examines a person, place, event, phenomenon, or other type of subject of analysis in order to extrapolate  key themes and results that help predict future trends, illuminate previously hidden issues that can be applied to practice, and/or provide a means for understanding an important research problem with greater clarity. A case study paper usually examines a single subject of analysis, but case study papers can also be designed as a comparative investigation that shows relationships between two or among more than two subjects. The methods used to study a case can rest within a quantitative, qualitative, or mixed-method investigative paradigm.

Case Studies . Writing@CSU. Colorado State University; Mills, Albert J. , Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010 ; “What is a Case Study?” In Swanborn, Peter G. Case Study Research: What, Why and How? London: SAGE, 2010.

How to Approach Writing a Case Study Research Paper

General information about how to choose a topic to investigate can be found under the " Choosing a Research Problem " tab in this writing guide. Review this page because it may help you identify a subject of analysis that can be investigated using a single case study design.

However, identifying a case to investigate involves more than choosing the research problem . A case study encompasses a problem contextualized around the application of in-depth analysis, interpretation, and discussion, often resulting in specific recommendations for action or for improving existing conditions. As Seawright and Gerring note, practical considerations such as time and access to information can influence case selection, but these issues should not be the sole factors used in describing the methodological justification for identifying a particular case to study. Given this, selecting a case includes considering the following:

  • Does the case represent an unusual or atypical example of a research problem that requires more in-depth analysis? Cases often represent a topic that rests on the fringes of prior investigations because the case may provide new ways of understanding the research problem. For example, if the research problem is to identify strategies to improve policies that support girl's access to secondary education in predominantly Muslim nations, you could consider using Azerbaijan as a case study rather than selecting a more obvious nation in the Middle East. Doing so may reveal important new insights into recommending how governments in other predominantly Muslim nations can formulate policies that support improved access to education for girls.
  • Does the case provide important insight or illuminate a previously hidden problem? In-depth analysis of a case can be based on the hypothesis that the case study will reveal trends or issues that have not been exposed in prior research or will reveal new and important implications for practice. For example, anecdotal evidence may suggest drug use among homeless veterans is related to their patterns of travel throughout the day. Assuming prior studies have not looked at individual travel choices as a way to study access to illicit drug use, a case study that observes a homeless veteran could reveal how issues of personal mobility choices facilitate regular access to illicit drugs. Note that it is important to conduct a thorough literature review to ensure that your assumption about the need to reveal new insights or previously hidden problems is valid and evidence-based.
  • Does the case challenge and offer a counter-point to prevailing assumptions? Over time, research on any given topic can fall into a trap of developing assumptions based on outdated studies that are still applied to new or changing conditions or the idea that something should simply be accepted as "common sense," even though the issue has not been thoroughly tested in practice. A case may offer you an opportunity to gather evidence that challenges prevailing assumptions about a research problem and provide a new set of recommendations applied to practice that have not been tested previously. For example, perhaps there has been a long practice among scholars to apply a particular theory in explaining the relationship between two subjects of analysis. Your case could challenge this assumption by applying an innovative theoretical framework [perhaps borrowed from another discipline] to the study a case in order to explore whether this approach offers new ways of understanding the research problem. Taking a contrarian stance is one of the most important ways that new knowledge and understanding develops from existing literature.
  • Does the case provide an opportunity to pursue action leading to the resolution of a problem? Another way to think about choosing a case to study is to consider how the results from investigating a particular case may result in findings that reveal ways in which to resolve an existing or emerging problem. For example, studying the case of an unforeseen incident, such as a fatal accident at a railroad crossing, can reveal hidden issues that could be applied to preventative measures that contribute to reducing the chance of accidents in the future. In this example, a case study investigating the accident could lead to a better understanding of where to strategically locate additional signals at other railroad crossings in order to better warn drivers of an approaching train, particularly when visibility is hindered by heavy rain, fog, or at night.
  • Does the case offer a new direction in future research? A case study can be used as a tool for exploratory research that points to a need for further examination of the research problem. A case can be used when there are few studies that help predict an outcome or that establish a clear understanding about how best to proceed in addressing a problem. For example, after conducting a thorough literature review [very important!], you discover that little research exists showing the ways in which women contribute to promoting water conservation in rural communities of Uganda. A case study of how women contribute to saving water in a particular village can lay the foundation for understanding the need for more thorough research that documents how women in their roles as cooks and family caregivers think about water as a valuable resource within their community throughout rural regions of east Africa. The case could also point to the need for scholars to apply feminist theories of work and family to the issue of water conservation.

Eisenhardt, Kathleen M. “Building Theories from Case Study Research.” Academy of Management Review 14 (October 1989): 532-550; Emmel, Nick. Sampling and Choosing Cases in Qualitative Research: A Realist Approach . Thousand Oaks, CA: SAGE Publications, 2013; Gerring, John. “What Is a Case Study and What Is It Good for?” American Political Science Review 98 (May 2004): 341-354; Mills, Albert J. , Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010; Seawright, Jason and John Gerring. "Case Selection Techniques in Case Study Research." Political Research Quarterly 61 (June 2008): 294-308.

Structure and Writing Style

The purpose of a paper in the social sciences designed around a case study is to thoroughly investigate a subject of analysis in order to reveal a new understanding about the research problem and, in so doing, contributing new knowledge to what is already known from previous studies. In applied social sciences disciplines [e.g., education, social work, public administration, etc.], case studies may also be used to reveal best practices, highlight key programs, or investigate interesting aspects of professional work. In general, the structure of a case study research paper is not all that different from a standard college-level research paper. However, there are subtle differences you should be aware of. Here are the key elements to organizing and writing a case study research paper.

I.  Introduction

As with any research paper, your introduction should serve as a roadmap for your readers to ascertain the scope and purpose of your study . The introduction to a case study research paper, however, should not only describe the research problem and its significance, but you should also succinctly describe why the case is being used and how it relates to addressing the problem. The two elements should be linked. With this in mind, a good introduction answers these four questions:

  • What was I studying? Describe the research problem and describe the subject of analysis you have chosen to address the problem. Explain how they are linked and what elements of the case will help to expand knowledge and understanding about the problem.
  • Why was this topic important to investigate? Describe the significance of the research problem and state why a case study design and the subject of analysis that the paper is designed around is appropriate in addressing the problem.
  • What did we know about this topic before I did this study? Provide background that helps lead the reader into the more in-depth literature review to follow. If applicable, summarize prior case study research applied to the research problem and why it fails to adequately address the research problem. Describe why your case will be useful. If no prior case studies have been used to address the research problem, explain why you have selected this subject of analysis.
  • How will this study advance new knowledge or new ways of understanding? Explain why your case study will be suitable in helping to expand knowledge and understanding about the research problem.

Each of these questions should be addressed in no more than a few paragraphs. Exceptions to this can be when you are addressing a complex research problem or subject of analysis that requires more in-depth background information.

II.  Literature Review

The literature review for a case study research paper is generally structured the same as it is for any college-level research paper. The difference, however, is that the literature review is focused on providing background information and  enabling historical interpretation of the subject of analysis in relation to the research problem the case is intended to address . This includes synthesizing studies that help to:

  • Place relevant works in the context of their contribution to understanding the case study being investigated . This would include summarizing studies that have used a similar subject of analysis to investigate the research problem. If there is literature using the same or a very similar case to study, you need to explain why duplicating past research is important [e.g., conditions have changed; prior studies were conducted long ago, etc.].
  • Describe the relationship each work has to the others under consideration that informs the reader why this case is applicable . Your literature review should include a description of any works that support using the case to study the research problem and the underlying research questions.
  • Identify new ways to interpret prior research using the case study . If applicable, review any research that has examined the research problem using a different research design. Explain how your case study design may reveal new knowledge or a new perspective or that can redirect research in an important new direction.
  • Resolve conflicts amongst seemingly contradictory previous studies . This refers to synthesizing any literature that points to unresolved issues of concern about the research problem and describing how the subject of analysis that forms the case study can help resolve these existing contradictions.
  • Point the way in fulfilling a need for additional research . Your review should examine any literature that lays a foundation for understanding why your case study design and the subject of analysis around which you have designed your study may reveal a new way of approaching the research problem or offer a perspective that points to the need for additional research.
  • Expose any gaps that exist in the literature that the case study could help to fill . Summarize any literature that not only shows how your subject of analysis contributes to understanding the research problem, but how your case contributes to a new way of understanding the problem that prior research has failed to do.
  • Locate your own research within the context of existing literature [very important!] . Collectively, your literature review should always place your case study within the larger domain of prior research about the problem. The overarching purpose of reviewing pertinent literature in a case study paper is to demonstrate that you have thoroughly identified and synthesized prior studies in the context of explaining the relevance of the case in addressing the research problem.

III.  Method

In this section, you explain why you selected a particular subject of analysis to study and the strategy you used to identify and ultimately decide that your case was appropriate in addressing the research problem. The way you describe the methods used varies depending on the type of subject of analysis that frames your case study.

If your subject of analysis is an incident or event . In the social and behavioral sciences, the event or incident that represents the case to be studied is usually bounded by time and place, with a clear beginning and end and with an identifiable location or position relative to its surroundings. The subject of analysis can be a rare or critical event or it can focus on a typical or regular event. The purpose of studying a rare event is to illuminate new ways of thinking about the broader research problem or to test a hypothesis. Critical incident case studies must describe the method by which you identified the event and explain the process by which you determined the validity of this case to inform broader perspectives about the research problem or to reveal new findings. However, the event does not have to be a rare or uniquely significant to support new thinking about the research problem or to challenge an existing hypothesis. For example, Walo, Bull, and Breen conducted a case study to identify and evaluate the direct and indirect economic benefits and costs of a local sports event in the City of Lismore, New South Wales, Australia. The purpose of their study was to provide new insights from measuring the impact of a typical local sports event that prior studies could not measure well because they focused on large "mega-events." Whether the event is rare or not, the methods section should include an explanation of the following characteristics of the event: a) when did it take place; b) what were the underlying circumstances leading to the event; c) what were the consequences of the event.

If your subject of analysis is a person. Explain why you selected this particular individual to be studied and describe what experience he or she has had that provides an opportunity to advance new understandings about the research problem. Mention any background about this person which might help the reader understand the significance of his/her experiences that make them worthy of study. This includes describing the relationships this person has had with other people, institutions, and/or events that support using him or her as the subject for a case study research paper. It is particularly important to differentiate the person as the subject of analysis from others and to succinctly explain how the person relates to examining the research problem.

If your subject of analysis is a place. In general, a case study that investigates a place suggests a subject of analysis that is unique or special in some way and that this uniqueness can be used to build new understanding or knowledge about the research problem. A case study of a place must not only describe its various attributes relevant to the research problem [e.g., physical, social, cultural, economic, political, etc.], but you must state the method by which you determined that this place will illuminate new understandings about the research problem. It is also important to articulate why a particular place as the case for study is being used if similar places also exist [i.e., if you are studying patterns of homeless encampments of veterans in open spaces, why study Echo Park in Los Angeles rather than Griffith Park?]. If applicable, describe what type of human activity involving this place makes it a good choice to study [e.g., prior research reveals Echo Park has more homeless veterans].

If your subject of analysis is a phenomenon. A phenomenon refers to a fact, occurrence, or circumstance that can be studied or observed but with the cause or explanation to be in question. In this sense, a phenomenon that forms your subject of analysis can encompass anything that can be observed or presumed to exist but is not fully understood. In the social and behavioral sciences, the case usually focuses on human interaction within a complex physical, social, economic, cultural, or political system. For example, the phenomenon could be the observation that many vehicles used by ISIS fighters are small trucks with English language advertisements on them. The research problem could be that ISIS fighters are difficult to combat because they are highly mobile. The research questions could be how and by what means are these vehicles used by ISIS being supplied to the militants and how might supply lines to these vehicles be cut? How might knowing the suppliers of these trucks from overseas reveal larger networks of collaborators and financial support? A case study of a phenomenon most often encompasses an in-depth analysis of a cause and effect that is grounded in an interactive relationship between people and their environment in some way.

NOTE:   The choice of the case or set of cases to study cannot appear random. Evidence that supports the method by which you identified and chose your subject of analysis should be linked to the findings from the literature review. Be sure to cite any prior studies that helped you determine that the case you chose was appropriate for investigating the research problem.

IV.  Discussion

The main elements of your discussion section are generally the same as any research paper, but centered around interpreting and drawing conclusions about the key findings from your case study. Note that a general social sciences research paper may contain a separate section to report findings. However, in a paper designed around a case study, it is more common to combine a description of the findings with the discussion about their implications. The objectives of your discussion section should include the following:

Reiterate the Research Problem/State the Major Findings Briefly reiterate the research problem you are investigating and explain why the subject of analysis around which you designed the case study were used. You should then describe the findings revealed from your study of the case using direct, declarative, and succinct proclamation of the study results. Highlight any findings that were unexpected or especially profound.

Explain the Meaning of the Findings and Why They are Important Systematically explain the meaning of your case study findings and why you believe they are important. Begin this part of the section by repeating what you consider to be your most important or surprising finding first, then systematically review each finding. Be sure to thoroughly extrapolate what your analysis of the case can tell the reader about situations or conditions beyond the actual case that was studied while, at the same time, being careful not to misconstrue or conflate a finding that undermines the external validity of your conclusions.

Relate the Findings to Similar Studies No study in the social sciences is so novel or possesses such a restricted focus that it has absolutely no relation to previously published research. The discussion section should relate your case study results to those found in other studies, particularly if questions raised from prior studies served as the motivation for choosing your subject of analysis. This is important because comparing and contrasting the findings of other studies helps to support the overall importance of your results and it highlights how and in what ways your case study design and the subject of analysis differs from prior research about the topic.

Consider Alternative Explanations of the Findings It is important to remember that the purpose of social science research is to discover and not to prove. When writing the discussion section, you should carefully consider all possible explanations for the case study results, rather than just those that fit your hypothesis or prior assumptions and biases. Be alert to what the in-depth analysis of the case may reveal about the research problem, including offering a contrarian perspective to what scholars have stated in prior research.

Acknowledge the Study's Limitations You can state the study's limitations in the conclusion section of your paper but describing the limitations of your subject of analysis in the discussion section provides an opportunity to identify the limitations and explain why they are not significant. This part of the discussion section should also note any unanswered questions or issues your case study could not address. More detailed information about how to document any limitations to your research can be found here .

Suggest Areas for Further Research Although your case study may offer important insights about the research problem, there are likely additional questions related to the problem that remain unanswered or findings that unexpectedly revealed themselves as a result of your in-depth analysis of the case. Be sure that the recommendations for further research are linked to the research problem and that you explain why your recommendations are valid in other contexts and based on the original assumptions of your study.

V.  Conclusion

As with any research paper, you should summarize your conclusion in clear, simple language; emphasize how the findings from your case study differs from or supports prior research and why. Do not simply reiterate the discussion section. Provide a synthesis of key findings presented in the paper to show how these converge to address the research problem. If you haven't already done so in the discussion section, be sure to document the limitations of your case study and needs for further research.

The function of your paper's conclusion is to: 1)  restate the main argument supported by the findings from the analysis of your case; 2) clearly state the context, background, and necessity of pursuing the research problem using a case study design in relation to an issue, controversy, or a gap found from reviewing the literature; and, 3) provide a place for you to persuasively and succinctly restate the significance of your research problem, given that the reader has now been presented with in-depth information about the topic.

Consider the following points to help ensure your conclusion is appropriate:

  • If the argument or purpose of your paper is complex, you may need to summarize these points for your reader.
  • If prior to your conclusion, you have not yet explained the significance of your findings or if you are proceeding inductively, use the conclusion of your paper to describe your main points and explain their significance.
  • Move from a detailed to a general level of consideration of the case study's findings that returns the topic to the context provided by the introduction or within a new context that emerges from your case study findings.

Note that, depending on the discipline you are writing in and your professor's preferences, the concluding paragraph may contain your final reflections on the evidence presented applied to practice or on the essay's central research problem. However, the nature of being introspective about the subject of analysis you have investigated will depend on whether you are explicitly asked to express your observations in this way.

Problems to Avoid

Overgeneralization One of the goals of a case study is to lay a foundation for understanding broader trends and issues applied to similar circumstances. However, be careful when drawing conclusions from your case study. They must be evidence-based and grounded in the results of the study; otherwise, it is merely speculation. Looking at a prior example, it would be incorrect to state that a factor in improving girls access to education in Azerbaijan and the policy implications this may have for improving access in other Muslim nations is due to girls access to social media if there is no documentary evidence from your case study to indicate this. There may be anecdotal evidence that retention rates were better for girls who were on social media, but this observation would only point to the need for further research and would not be a definitive finding if this was not a part of your original research agenda.

Failure to Document Limitations No case is going to reveal all that needs to be understood about a research problem. Therefore, just as you have to clearly state the limitations of a general research study , you must describe the specific limitations inherent in the subject of analysis. For example, the case of studying how women conceptualize the need for water conservation in a village in Uganda could have limited application in other cultural contexts or in areas where fresh water from rivers or lakes is plentiful and, therefore, conservation is understood differently than preserving access to a scarce resource.

Failure to Extrapolate All Possible Implications Just as you don't want to over-generalize from your case study findings, you also have to be thorough in the consideration of all possible outcomes or recommendations derived from your findings. If you do not, your reader may question the validity of your analysis, particularly if you failed to document an obvious outcome from your case study research. For example, in the case of studying the accident at the railroad crossing to evaluate where and what types of warning signals should be located, you failed to take into consideration speed limit signage as well as warning signals. When designing your case study, be sure you have thoroughly addressed all aspects of the problem and do not leave gaps in your analysis.

Case Studies . Writing@CSU. Colorado State University; Gerring, John. Case Study Research: Principles and Practices . New York: Cambridge University Press, 2007; Merriam, Sharan B. Qualitative Research and Case Study Applications in Education . Rev. ed. San Francisco, CA: Jossey-Bass, 1998; Miller, Lisa L. “The Use of Case Studies in Law and Social Science Research.” Annual Review of Law and Social Science 14 (2018): TBD; Mills, Albert J., Gabrielle Durepos, and Eiden Wiebe, editors. Encyclopedia of Case Study Research . Thousand Oaks, CA: SAGE Publications, 2010; Putney, LeAnn Grogan. "Case Study." In Encyclopedia of Research Design , Neil J. Salkind, editor. (Thousand Oaks, CA: SAGE Publications, 2010), pp. 116-120; Simons, Helen. Case Study Research in Practice . London: SAGE Publications, 2009;  Kratochwill,  Thomas R. and Joel R. Levin, editors. Single-Case Research Design and Analysis: New Development for Psychology and Education .  Hilldsale, NJ: Lawrence Erlbaum Associates, 1992; Swanborn, Peter G. Case Study Research: What, Why and How? London : SAGE, 2010; Yin, Robert K. Case Study Research: Design and Methods . 6th edition. Los Angeles, CA, SAGE Publications, 2014; Walo, Maree, Adrian Bull, and Helen Breen. “Achieving Economic Benefits at Local Events: A Case Study of a Local Sports Event.” Festival Management and Event Tourism 4 (1996): 95-106.

Writing Tip

At Least Five Misconceptions about Case Study Research

Social science case studies are often perceived as limited in their ability to create new knowledge because they are not randomly selected and findings cannot be generalized to larger populations. Flyvbjerg examines five misunderstandings about case study research and systematically "corrects" each one. To quote, these are:

Misunderstanding 1 :  General, theoretical [context-independent knowledge is more valuable than concrete, practical (context-dependent) knowledge. Misunderstanding 2 :  One cannot generalize on the basis of an individual case; therefore, the case study cannot contribute to scientific development. Misunderstanding 3 :  The case study is most useful for generating hypotheses; that is, in the first stage of a total research process, whereas other methods are more suitable for hypotheses testing and theory building. Misunderstanding 4 :  The case study contains a bias toward verification, that is, a tendency to confirm the researcher’s preconceived notions. Misunderstanding 5 :  It is often difficult to summarize and develop general propositions and theories on the basis of specific case studies [p. 221].

While writing your paper, think introspectively about how you addressed these misconceptions because to do so can help you strengthen the validity and reliability of your research by clarifying issues of case selection, the testing and challenging of existing assumptions, the interpretation of key findings, and the summation of case outcomes. Think of a case study research paper as a complete, in-depth narrative about the specific properties and key characteristics of your subject of analysis applied to the research problem.

Flyvbjerg, Bent. “Five Misunderstandings About Case-Study Research.” Qualitative Inquiry 12 (April 2006): 219-245.

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  • Published: 30 May 2024

Determinants of low Apgar score among newborns delivered by Cesarean section in Nigist Eleni Mohammed memorial specialized hospital, Southern Ethiopia

  • Mitiku Desalegn 1 ,
  • Tadele Yohannes 2 &
  • Legesse Tesfaye 2  

Scientific Reports volume  14 , Article number:  12420 ( 2024 ) Cite this article

Metrics details

  • Epidemiology
  • Paediatric research

A variety of factors can predispose newborns to have a low Apgar score after delivery. Identification of the determinants of low Apgar scores is an important first step to take to apply the necessary precautions. This study aimed to identify the determinants of low fifth-minute Apgar score after a Cesarean section. An institutional-based case–control study was conducted among mothers who deliver their newborns by Cesarean section in Nigist Eleni Mohammed Memorial Comprehensive Specialized Hospital, Ethiopia, from July 1, 2022, to September 30, 2022. Data were collected from 70 cases and 140 controls using a semi-structured checklist. A systematic random sampling technique was used to select both charts of mothers with cases and controls. Charts of mothers with newborns Apgar score less than 7 were considered as cases; whereas a similar group of charts of mothers with newborns with fifth-minute Apgar score greater than or equal to 7 were categorized as control. Descriptive statistics and bivariable and multivariable binary logistic regression analyses were conducted to describe the mothers and newborns and identify determinants of the fifth-minute low Apgar score, respectively. Adjusted odds ratios (AOR) with their respective 95% confidence interval (CI) were used to declare the determinant factors, and the statistical significance was set at P < 0.05. In total, 140 controls and 70 cases of mothers charts were enrolled in this study. The Mean ± SD age of mothers of cases and controls were 26.9 ± 4.9 and 27.06 ± 4.1 years, respectively. General anaesthesia (AOR = 4.2; 95% CI: 1.9 ‒ 9.3), rural residence (AOR = 3.7, 95% CI, 1.7‒8.1), low birth weight (AOR = 3.2, 95% CI, 1.3‒7.8), and emergency Cesarean section (AOR = 2.6; 95% CI: 1.2 ‒ 5.8) were identified determinant factors of low fifth minute Apgar score. A fifth-minute low Apgar score was significantly associated with newborns delivered through emergency Cesarean section, low birth weight, rural residence, and delivered from mothers who had undergone Cesarean section under general anaesthesia.

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Introduction.

The Apgar score was developed in 1952 as a quick way to examine the clinical condition of newborns and is still widely used for newborn infant assessment at 1 and 5 min after birth 1 . It comprises five components: heart rate, respiratory rate, reflex irritability, skin colour, and muscle tone. Each item’s score ranges from 0 to 2, with a total score of 10. A score ≥ 7 requires only routine newborn care. A score between 4 and 6 requires some intervention, whereas a score ≤ 4 requires extensive resuscitation 2 .

Common neonatal complications following Cesarean section include a low Apgar score, perinatal asphyxia, neonatal sepsis, meconium aspiration syndrome, early neonatal death, stillbirth, and prematurity 3 . Newborns with low Apgar scores have a poor neonatal outcome, often with impaired gas exchange, which can escalate to hypercapnia, hypoxemia, and severe metabolic acidosis if left untreated. These conditions cause 24% of infant deaths in Africa, and 280,000 neonatal deaths in Sub-Saharan Africa are attributable to this condition 4 . Infants with a low 5 min Apgar score have a greater risk of mortality and morbidity compared to infants with a low 1 min Apgar score. Of infants with a very low Apgar score at 5 min, 81% had a poor outcome 5 . Fifth-minute low Apgar score survival is a major determinant of a newborn's capacity to thrive; therefore, it is a better predictor of survival than the first-minute low Apgar score 6 . According to recent data from South Australia, children who have five-minute Apgar scores of 0–5 or 6, compared with those of 10, are more likely to achieve at or below the National Minimum Standards (NMS) on the Australian National Assessment Program—Literacy and Numeracy (NAPLAN) assessments when they are eight years old 7 .

A variety of conditions can predispose newborns to have a low Apgar score after a Cesarean section. A comprehensive population study conducted in Sweden found that a more prolonged second stage of labour is linked to a greater likelihood of a low 5-min Apgar score 8 . Low Apgar scores and neonatal complications were shown to occur two to three times more often in emergency surgical deliveries than in elective procedures, according to another Norwegian study 9 . An Apgar score of less than five at five minutes is a reliable indicator of newborn mortality in infants weighing between 1500 and 2499 g at birth 10 . Data from Ethiopian settings show that the following variables were independently associated with the low Apgar score: type of anaesthesia, meconium-stained amniotic fluid, antepartum haemorrhage, skin incision to delivery time, pregnancy-induced hypertension, and fetal birth weight < 2.5 kg 11 .

In studies performed in several countries, birth asphyxia among babies born by Cesarean sections is associated as evidenced by low Apgar scores. Determinant factors associated with low fifth-minute Apgar scores on newborns with Cesarean section have not been studied well in Ethiopia. Identification of the factors associated with low fifth-minute Apgar score after Cesarean section is an important first step for clinicians for the management of such a group of pregnant women to take the necessary precautions. This will reduce neonatal morbidity and mortality significantly and will help to meet the 2030 SDG (Sustainable Development Goal) goal of the country. Other researchers in this area also can use this paper as input to research the practice of Cesarean section. The objective of this study was to identify the determinants of low fifth-minute Apgar score in newborns delivered by Cesarean section at the Nigist Eleni Mohamed Memorial Comprehensive Specialized Hospital.

Method and material

Study design.

This was an institution-based, unmatched and retrospective case–control study.

Setting and study period

The study was conducted at Wachemo University Nigist Eleni Mohammed Memorial Comprehensive Specialized Hospital from July 1, 2022, to September 30, 2022. It is located in Hossana town, Hadya Zone, South Nation’s Nationalities and Peoples Region 232 km, south of Addis Ababa, the capital city of Ethiopia. The maternity ward has 80 beds, on average; there are 30 deliveries each day. From the total number, One-fourth of newborns were delivered by cesarean section. Spinal anaesthesia is the most widely practised type of anaesthesia for Cesarean sections, and most of the cases indicated to undergo Cesarean section are emergencies. Three nurse midwives in the operating theatre work interchangeably for the entire 24 h of a day in an 8-h shift, along with seven obstetrics and gynaecology specialists and 12 anaesthetists. The assigned nurse-midwives are trained to perform newborn care. In case of a neonatal emergency, the gynaecologists and master anesthetists provide advanced neonatal resuscitation together.

Participants

All charts of mothers with term or post-term neonates who gave birth with Cesarian section were included in the study. Charts of mothers with, multiple pregnancies, neonates with congenital anomalies, intrauterine fetal death diagnosed on admission, whose mothers were unable to provide a medical history due to any medical disease or obstetric complications, and neonates from a mother with medical illnesses (obesity, diabetes mellitus, cardiac illness and asthma) were excluded from the study.

Sample size determination and sampling technique

The sample size was calculated using the double population proportion formula by using Open Epi info for an unmatched case–control study. The proportion of exposure among controls and cases of different variables, which were stated in different literature as a determinant factor of a low Apgar score, was computed. From the listed alternative sample size, the largest sample size was selected (Table 1 ). The following assumptions were used; 95% confidence level, power of 80%, the OR (odds ratio) of 4.58, proportion (p) of controls with preeclampsia of 5.9% 11 , and 2:1 controls to cases ratio, the final sample size was (210; 70 cases and 140 controls).

Before selecting cases and controls, all eligible charts of mothers who underwent Cesarean section during the study period were identified and the data collectors reviewed the identified charts of mothers. From the chart, the Apgar score of every newborn was checked, and charts of mothers with newborns who delivered with a fifth-minute Apgar score < 7 were considered cases, whereas a similar group of charts of mothers with newborns with a fifth-minute Apgar score ≥ 7 was categorized as control. The total number of eligible charts of mothers identified during the study period was 595 (146 cases and 449 controls) then, a systematic random sampling technique was used to select both cases and controls. For both cases and controls, K was determined using the formula: K = N/n, where n = total calculated sample size of cases or controls and N = total identified charts of cases or controls. Therefore, the sampling interval (k) was two 2 for cases and three 3 for controls; the first chart was selected randomly.

Operational definition

Cases: Charts of mothers with newborns with an Apgar score < 7 at the fifth minute following cesarean section delivery. Controls: Charts of the mother with a newborn with an Apgar score 7–10 at the fifth minute following cesarean section delivery 13 .

Low birth weight: Birth weight of newborn ≤ 2500 g. Normal birth weight: Birth weight of newborn > 2500 g.

Incision to delivery time (I-D time): the time interval, in minutes, between when the obstetrician makes the skin incision to the delivery of the foetus from the womb.

Data collection and variables

A semi-structured checklist was used to collect data by reviewing the mother’s charts retrospectively. The checklist was developed after reviewing the literature and mainly addressed the socio-demographic variables of mothers (age, residence); maternal characteristics (parity, antenatal care (ANC) follow-up, anaemia); neonatal characteristics (weight of newborn, outcome of the newborn), and operation-related characteristics ( indication for Cesarean section, Urgency of surgery, type of anaesthesia and incision to delivery time (ID)).

Three midwives are assigned to collect data in an eight-hour shift for 24 h after appropriate training and orientation. Charts of mothers who fulfilled the eligibility criteria were reviewed for relevant information. The principal investigator checked the completeness of the data every day. The authors do not have access to information that could identify individual mothers during or after data collection.

Statistical methods

The data were coded, entered into Epi Info version 7, and exported to the Statistical Package for Social Sciences (SPSS) software version 27.0. Descriptive statistical analysis was performed to compute the frequency, percentage, and mean of socio-demographic variables. The Apgar score was coded as ''0'' for a low Apgar score and ''1'' for a good Apgar score. When smaller expected frequencies were encountered, re-categorization of variables or merging of levels was performed. Hosmer- Lemeshow tests for goodness of fit were performed for model fitness 14 . The chi-square test was used to compare categorical variables between the groups. Bi-variable logistic regression analysis was performed to examine the determinant factors of outcome variables. For bivariable analysis, a P-value of ≤ 0.25 was used for multivariable logistic regression analysis. After checking for multicollinearity, a multivariable analysis was performed to adjust for possible confounders and identify significant determinant factors. Variables with a P-value < 0.05 were used to declare statistical significance in multivariable logistic regression analysis. The results are presented in text, tables, charts, and graphs.

Data quality assurance

To ensure the quality of data, one day of training was provided for data collectors on the objectives and standard procedures of the data collection. The questionnaire was pretested on 5% of the sample before the actual data collection period. It was assessed for its clarity, length, and completeness, and the necessary corrections were made accordingly. The completeness of the data was evaluated daily by the principal investigator. Data collectors were supervised, and regular meetings were held throughout the data collection period.

Ethics approval and consent to participate

Ethical approval was obtained from Nigist Eleni Mohamed Memorial Comprehensive Specialized Hospital (NEMMCSH) ethics committee (Ref.No.NEMMCSH/25/2022) to get permission to get access to charts of mothers for data collection. All methods were carried out in accordance with the principles of the Declaration of Helsinki. The requirement for informed consent was waived by the Ethics Committee of NEMMCSH (Ref.No.NEMMCSH/25/2022) because of the retrospective nature of the study.

In total, 140 controls and 70 cases of patient charts were enrolled in this study. The mean ± SD age of mothers of cases and controls were 26.9 ± 4.9 and 27.1 ± 4.1 years, respectively. Parents under the age of 25 years made up 64 (45.7%) of the control group and 32 (45.7%) of the case group. Of the parents of children included in this study, 29 (41.4%) of the cases and 85 (60.7%) of the controls of parents were urban residents (Table 2 ).

Obstetric, Surgery and Anaesthesia-related characteristics

Among the total number of parents, 46 (65.7%) of parents of the cases and 94(67.1%) of parents of controls were multigravida. Regarding ANC follow-up, 97.1% of mothers in the case group and all mothers in the control group had ANC visits. In total, 62.9% of mothers in the case group and 54.6% of mothers in the control group underwent emergency surgery. This study has shown that 34(48.6%) of mothers of cases and 108(76.4%) of controls underwent Cesarean section with spinal anaesthesia. There was no significant difference in the proportion of mothers regarding the urgency of surgery between the case and control groups (P = 0.23) (Table 3 ).

Newborn Characteristics

Of the total, 24 (34.3%) of newborns in the case group and 22 (15.7%) newborns in the control group had low birth weight. All live newborns from the case group were admitted to the neonatal intensive care unit (NICU), whereas 97.1% of newborns from the control group were directly handed to the mother for early initiation of breastfeeding (Table 4 ).

Determinants of low fifth-minute Apgar score

Bivariable logistic regression analyses were conducted to identify determinants of low fifth-minute Apgar scores. The results revealed that urban residence (COR = 2.8, 95% CI: 1.58–5.9) P = 0.001, general anaesthesia (COR = 3.18, 95% CI: 1.72–5.82) P = 0.001), low birth weight of the newborn (COR = 2.78, 95% CI, 1.43‒5.4) P = 0.003, meconium-stained amniotic fluid (MSAF) (COR = 2.8, 95% CI, 1.01‒8.1) P = 0.05, were identified determinant factors.

Multivariable analysis was performed for the following variables; residence, type of anesthesia, weight of the newborn, type of surgery, and MSAF indication for cesarean section. According to the multivariable logistic regression analysis results, residence, type of anaesthesia, weight of the newborn, and type of surgery were identified as determinants of the fifth-minute low Apgar score.

The multivariable analysis result showed that the likelihood of developing a low Apgar score among neonates born to mothers who came from rural areas was 3.7 times (AOR = 3.7, 95% CI, 1.7‒8.1) higher compared with their counterparts. Moreover, neonates born with low birth weight were 3.2 times (AOR = 3.2, 95% CI, 1.3‒7.8) more likely to develop a low Apgar score than neonates with normal birth weight (Table 5 ).

This study included 210 (70 cases, 140 controls) singleton neonates delivered via Cesarean section; of which, 95.7% neonates from the case group were admitted to NICU and another three neonates from the same group had early neonatal death after being resuscitated. In the current study, factors that contributed to low fifth-minute Apgar scores among neonates delivered through the Cesarian section were determined. Newborns, delivered through emergency Cesarean section, with low birth weight (less than 2500gm), whose mothers are from the rural area, and delivered from mothers who undergone Cesarean section under general anaesthesia were identified as determinant factors in this study.

According to this study, neonates who were delivered with fifth-minute low Apgar scores were more likely from rural resident mothers than mothers from urban areas (AOR = 3.7, 95% CI, 1.7‒8.1). This result is supported by a hospital-based, unmatched case–control study conducted at Hawassa City Public Hospitals 6 . The results of a study conducted at the Gonder University referral hospital to assess the proportion and associated factors of low fifth-minute Apgar scores were consistent with our findings 12 . This might be related to low healthcare access in rural areas, which can directly affect fetal outcomes 15 . Lack of transportation, the distance of travel to the hospital by residents in rural areas, challenging roads, the cost of ambulance fuel, the use of an ambulance for unanticipated purposes, and the disobedient behaviour of ambulance drivers were additional concerns being evaluated 16 , 17 . Problem with referral pattern from primary health care will also have an impact on appropriate care of the mother.

This study revealed that neonates born with low birth weight ≤ 2.5 kg were 3.2 times more likely to have a low Agar score compared to neonates with normal birth weight (AOR = 3.2, 95% CI, 1.3‒7.8). This finding is in line with an unmatched case–control study conducted at Wolaita Sodo University Comprehensive Specialized Hospital 18 . Another hospital-based unmatched case–control study conducted to determine the determinants of birth asphyxia is consistent with our results 19 . This is because inadequate dietary intake, alcoholism, and passive tobacco smoking during pregnancy could affect neonatal birth weight, which could further affect Apgar scores 20 . Smaller newborns may experience difficult births, decreased temperature regulation, hypoglycemia, and may suffer challenging cardiorespiratory transition and perinatal hypoxia, all of which may further influence Apgar scores 21 .

The type of anaesthesia is another variable that has a significant association with a low fifth-minute Apagar score. Regarding our study findings, newborns whose mothers underwent general anaesthesia were 4.2 times more likely to develop a low fifth-minute Apgar score than those whose mothers underwent spinal anaesthesia. Our results are supported by those of multiple local and international studies. An institutional-based cross-sectional study conducted at Arba Minch General Hospital showed newborns delivered from a mother who underwent general anaesthesia were 4.39 times likely to develop low fifth-minute Apgar scores (AOR = 4.39, 95%CI = 2.45—7.88) 22 , case–control study conducted at Wolayta Sodo Comprehensive Specialized Hospital (WSCSH) 18 , and another study from Ghandi General hospital conducted to identify factors associated with fifth-minute low Apgar scores were consistent with our study findings 23 . This might be related to the high level of circulating catecholamines causing a reduction in uteroplacental blood flow and anaesthetic drugs administered during general anaesthesia cross the placenta and depress the fetus 24 .

The likelihood of low Apgar scores was approximately 2.6 times (AOR = 2.6;95% CI: 1.2–5.8) higher in neonates born from mothers who underwent emergency Cesarean section than in those born from mothers who underwent elective Cesarian section. This finding was supported by a study conducted to compare fetal outcomes in emergency versus elective Cesarean Section 25 and another study that compared fetal outcomes after emergency and elective Cesarean section was also consistent with our results 26 . This might be because most of the mothers presented with complications or the decision to undergo Cesarean section might be delayed after they develop complications 27 .

Limitations of the study

The authors could not obtain complete information about the economic status or the number of prenatal visits from the medical records of the mothers. Also, it was not possible to measure the urgency or severity of the emergency caesarean section because of the available data. All charts of mothers with term or post-term neonates who gave birth with Cesarian section were included in the study. However, the difference or similarity of the outcomes of term and post-term neonates could not be determined because of incomplete data recordings.

Conclusions and recommendations

Emergency Cesarean section, newborns with low birth weight (less than 2500gm), mothers who came from rural areas, and mothers who had undergone Cesarean section under general anaesthesia were determinants of low fifth-minute Apgar score. Therefore, to limit the frequency of low fifth-minute Apgar scores and reduce complications, the indicated determinant factors must be addressed. Therefore, it is crucial to address the identified risk factors to minimize the incidence of low fifth-minute Apgar scores and reduce complications due to low Apgar scores. Particular emphasis should be given to mothers admitted from rural areas. Anaesthetists and the resuscitation team must take care when the procedure is an emergency and the preferred mode of anaesthesia is general. Careful identification of a fetus with low weight preoperatively would help the operating team undertake all required preparations.

Data availability

Data is provided within the manuscript or supplementary files.

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Acknowledgements

The authors thank the Nigist Eleni Mohamed Memorial Comprehensive Specialized Hospital Ethical Committee for approval of ethical clearance and for allowing us to collect data from hospital chart records.

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Department of Anesthesia, College of Medicine and Health Sciences, Wachemo University, Hosaina, Ethiopia

Mitiku Desalegn

School of Public Health, College of Medicine & Health Sciences, Wachemo University, Hosaina, Ethiopia

Tadele Yohannes & Legesse Tesfaye

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MD conceived the study and contributed significantly to the design and acquisition of data, data analysis and interpretation, and manuscript preparation; TY and LT supervised the data collection, design, statistical analysis, and manuscript preparation.

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Correspondence to Mitiku Desalegn .

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Desalegn, M., Yohannes, T. & Tesfaye, L. Determinants of low Apgar score among newborns delivered by Cesarean section in Nigist Eleni Mohammed memorial specialized hospital, Southern Ethiopia. Sci Rep 14 , 12420 (2024). https://doi.org/10.1038/s41598-024-62223-8

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Published : 30 May 2024

DOI : https://doi.org/10.1038/s41598-024-62223-8

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  1. How to write the conclusion of your case study

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