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Writing a case report in 10 steps

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• Victoria Stokes , foundation year 2 doctor, trauma and orthopaedics, Basildon Hospital ,
• Caroline Fertleman , paediatrics consultant, The Whittington Hospital NHS Trust
• victoria.stokes1{at}nhs.net

Victoria Stokes and Caroline Fertleman explain how to turn an interesting case or unusual presentation into an educational report

It is common practice in medicine that when we come across an interesting case with an unusual presentation or a surprise twist, we must tell the rest of the medical world. This is how we continue our lifelong learning and aid faster diagnosis and treatment for patients.

It usually falls to the junior to write up the case, so here are a few simple tips to get you started.

First steps

Begin by sitting down with your medical team to discuss the interesting aspects of the case and the learning points to highlight. Ideally, a registrar or middle grade will mentor you and give you guidance. Another junior doctor or medical student may also be keen to be involved. Allocate jobs to split the workload, set a deadline and work timeframe, and discuss the order in which the authors will be listed. All listed authors should contribute substantially, with the person doing most of the work put first and the guarantor (usually the most senior team member) at the end.

Getting consent

Gain permission and written consent to write up the case from the patient or parents, if your patient is a child, and keep a copy because you will need it later for submission to journals.

Information gathering

Gather all the information from the medical notes and the hospital’s electronic systems, including copies of blood results and imaging, as medical notes often disappear when the patient is discharged and are notoriously difficult to find again. Remember to anonymise the data according to your local hospital policy.

Write up the case emphasising the interesting points of the presentation, investigations leading to diagnosis, and management of the disease/pathology. Get input on the case from all members of the team, highlighting their involvement. Also include the prognosis of the patient, if known, as the reader will want to know the outcome.

Coming up with a title

Discuss a title with your supervisor and other members of the team, as this provides the focus for your article. The title should be concise and interesting but should also enable people to find it in medical literature search engines. Also think about how you will present your case study—for example, a poster presentation or scientific paper—and consider potential journals or conferences, as you may need to write in a particular style or format.

Background research

Research the disease/pathology that is the focus of your article and write a background paragraph or two, highlighting the relevance of your case report in relation to this. If you are struggling, seek the opinion of a specialist who may know of relevant articles or texts. Another good resource is your hospital library, where staff are often more than happy to help with literature searches.

How your case is different

Move on to explore how the case presented differently to the admitting team. Alternatively, if your report is focused on management, explore the difficulties the team came across and alternative options for treatment.

Finish by explaining why your case report adds to the medical literature and highlight any learning points.

Writing an abstract

The abstract should be no longer than 100-200 words and should highlight all your key points concisely. This can be harder than writing the full article and needs special care as it will be used to judge whether your case is accepted for presentation or publication.

Discuss with your supervisor or team about options for presenting or publishing your case report. At the very least, you should present your article locally within a departmental or team meeting or at a hospital grand round. Well done!

Competing interests: We have read and understood BMJ’s policy on declaration of interests and declare that we have no competing interests.

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How to Write a Medical Case Study Report

Last Updated: April 18, 2024 Approved

This article was medically reviewed by Mark Ziats, MD, PhD and by wikiHow staff writer, Jennifer Mueller, JD . Dr. Mark Ziats is an Internal Medicine Physician, Scientist, Entrepreneur, and the Medical Director of xBiotech. With over five years of experience, he specializes in biotechnology, genomics, and medical devices. He earned a Doctor of Medicine degree from Baylor College of Medicine, a Ph.D. in Genetics from the University of Cambridge, and a BS in Biochemistry and Chemistry from Clemson University. He also completed the INNoVATE Program in Biotechnology Entrepreneurship at The Johns Hopkins University - Carey Business School. Dr. Ziats is board certified by the American Board of Internal Medicine. There are 15 references cited in this article, which can be found at the bottom of the page. wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, 100% of readers who voted found the article helpful, earning it our reader-approved status. This article has been viewed 189,731 times.

You've encountered an interesting and unusual case on your rounds, and a colleague or supervising physician says, "Why don't you write up a case study report?" If you've never written one before, that might sound intimidating, but it's a great way to get started in medical writing. Case studies always follow a standard structure and format, so the writing is very formulaic once you get the hang of it. Read on for a step-by-step guide to writing your first case study report.

What is a case study report?

• Medical students or residents typically do the bulk of the writing of the report. If you're just starting your medical career, a case study report is a great way to get a publication under your belt. [2] X Research source

• If the patient is a minor or is incapable of giving informed consent, get consent from their parents or closest relative. [4] X Trustworthy Source PubMed Central Journal archive from the U.S. National Institutes of Health Go to source
• Your hospital likely has specific consent forms to use. Ask your supervising physician if you're not sure where to get one.
• Some journals also have their own consent form. Check your target journal's author or submission information to make sure. [5] X Research source

How is a case study report structured?

• Even though the introduction is the first part of a case study report, doctors typically write it last. You'll have a better idea of how to introduce your case study to readers after you've written it.
• Your abstract comes at the top, before the introduction, and provides a brief summary of the entire report. Unless your case study is published in an open-access journal, the abstract is the only part of the article many readers will see.

• Many journals offer templates and checklists you can use to make sure your case study includes everything necessary and is formatted properly—take advantage of these! Some journals, such as BMJ Case Reports , require all case studies submitted to use their templates.

Drafting Your Medical Case Study Report

• Patient description
• Chronological case history
• Physical exam results
• Results of any pathological tests, imaging, or other investigations
• Treatment plan
• Expected outcome of treatment
• Actual outcome of treatment

• Why the patient sought medical help (you can even use their own words)
• Important information that helped you settle on your diagnosis
• The results of your clinical examination, including diagnostic tests and their results, along with any helpful images
• A description of the treatment plan
• The outcome, including how and why treatment ended and how long the patient was under your care [11] X Trustworthy Source PubMed Central Journal archive from the U.S. National Institutes of Health Go to source

• You will need references to back up symptoms of the condition, common treatment, and the expected outcome of that common treatment.
• Use your research to paint a picture of the usual case of a patient with a similar condition—it'll help you show how unusual and different your patient's case is.
• Generally, aim for around 20 references—no fewer than 15, but no more than 25. [13] X Trustworthy Source PubMed Central Journal archive from the U.S. National Institutes of Health Go to source

• Close your discussion section with a summary of the lessons learned from the case and why it's significant to consider when treating similar cases in the future.
• Outline any open questions that remain. You might also provide suggestions for future research.

• In your conclusion, you might also give suggestions or recommendations to readers based on what you learned as a result of the case.
• Some journals don't want a separate conclusion section. If that's the case for one of your target journals, just move this paragraph to the end of your discussion section.

Polishing Your Report for Submission to Publishers

• Most titles are fewer than 10 words long and include the name of the disease or condition treated.
• You might also include the treatment used and whether the outcome was successful. When deciding what to include, think about the reason you wrote the case study in the first place and why you think it's important for other clinicians to read.

• Made a significant intellectual contribution to the case study report
• Was involved in the medical care of the patient reported
• Can explain and defend the data presented in the report
• Has approved the final manuscript before submission for publication

• Keep in mind that the abstract is not just going to be the first thing people read—it will often be the only thing people read. Make sure that if someone is going to walk away having only read the abstract, they'll still get the same message they would have if they read the whole thing.
• There are 2 basic types of abstract: narrative and structured. A narrative abstract is a single paragraph written in narrative prose. A structured abstract includes headings that correspond with the sections of the paper, then a brief summary of each section. Use the format preferred by your target journal.

• Look for keywords that are relevant to your field or sub-field and directly related to the content of your article, such as the name of the condition or specific treatments you used.
• Most journals allow 4-8 keywords but check the submission guidelines of your target journal to make sure.

• Blur out the patient's face as well as any tattoos, birthmarks, or unrelated scars that are visible in diagnostic images.

• It's common to thank the patient, but that's up to you. Even if you don't, include a statement indicating that you have the patient's written, informed consent to publish the information.
• Read the journal's submission guidelines for a definition of what that journal considers a conflict of interest. They're generally the same, but some might be stricter than others. [22] X Research source

• If you're not familiar with the citation style used by your target journal, check online for a guide. There might also be one available at your hospital or medical school library.
• Medical librarians can also help with citation style and references if you run into something tricky—don't just wing it! Correct citation style insures that readers can access the materials you cite.

• It's also a good idea to get a beta reader who isn't a medical professional. Their comments can help you figure out where you need to clarify your points.
• Read a lot of case studies published in your target journals—it will help you internalize the tone and style that journal is looking for.

Submitting Your Report to Publishers

• Look into the background and reputation of journals before you decide to submit to them. Only seek publication from reputable journals in which articles go through a peer-review process.
• Find out what publishing fees the journals charge. Keep in mind that open-access journals tend to charge higher publishing fees. [26] X Research source
• Read each journal's submission and editorial guidelines carefully. They'll tell you exactly how to format your case study, how long each section should be, and what citation style to use. [27] X Research source
• For electronic journals that only publish case reports, try BMJ Case Reports , Journal of Medical Case Reports , or Radiology Case Reports .

• If your manuscript isn't suitable for the journal you submitted to, the journal might offer to forward it to an associated journal where it would be a better fit.
• When your manuscript is provisionally accepted, the journal will send it to other doctors for evaluation under the peer-review process.
• Most medical journals don't accept simultaneous submissions, meaning you'll have to submit to your first choice, wait for their decision, then move to the next journal on the list if they don't bite.

• Along with your revised manuscript, include a letter with your response to each of the reviewer's comments. Where you made revisions, add page numbers to indicate where the revisions are that address that reviewer's comments.
• Sometimes, doctors involved in the peer review process will indicate that the journal should reject the manuscript. If that's the case, you'll get a letter explaining why your case study report won't be published and you're free to submit it elsewhere.

• Some journals require you to have your article professionally copy-edited at your own cost while others do this in-house. The editors will let you know what you're responsible for.

• With your acceptance letter, you'll get instructions on how to make payment and how much you owe. Take note of the deadline and make sure you pay it as soon as possible to avoid publication delays.
• Some journals will publish for free, with an "open-access option" that allows you to pay a fee only if you want open access to your article. [32] X Research source

• Through the publishing agreement, you assign your copyright in the article to the journal. This allows the journal to legally publish your work. That assignment can be exclusive or non-exclusive and may only last for a specific term. Read these details carefully!
• If you published an open-access article, you don't assign the copyright to the publisher. The publishing agreement merely gives the journal the right to publish the "Version of Record." [33] X Research source

How do I find a suitable case for a report?

• A rare disease, or unusual presentation of any disease
• An unusual combination of diseases or conditions
• A difficult or inconclusive diagnosis
• Unexpected developments or responses to treatment
• Personal impact
• Observations that shed new light on the patient's disease or condition

• There might be other members of your medical team that want to help with writing. If so, use one of these brainstorming sessions to divvy up writing responsibilities in a way that makes the most sense given your relative skills and experience.
• Senior doctors might also be able to name some journals that would potentially publish your case study. [36] X Research source

Expert Q&A

You Might Also Like

• ↑ https://www.elsevier.com/connect/authors-update/the-dos-and-donts-of-writing-and-publishing-case-reports
• ↑ https://www.bmj.com/content/350/bmj.h2693
• ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5686928/
• ↑ https://health.usf.edu/medicine/internalmedicine/im-impact/~/media/B3A3421F4C144FA090AE965C21791A3C.ashx
• ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2597880/
• ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6476221/
• ↑ https://www.springer.com/gp/authors-editors/authorandreviewertutorials/writing-a-journal-manuscript/title-abstract-and-keywords/10285522
• ↑ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2597880/
• ↑ https://thelancet.com/pb/assets/raw/Lancet/authors/tl-info-for-authors.pdf
• ↑ https://jmedicalcasereports.biomedcentral.com/articles/10.1186/s13256-017-1351-y
• ↑ https://guides.himmelfarb.gwu.edu/casereports
• ↑ https://casereports.bmj.com/pages/authors/
• ↑ https://jmedicalcasereports.biomedcentral.com/articles/10.1186/1752-1947-7-239
• ↑ https://research.chm.msu.edu/students-residents/writing-a-case-report
• ↑ https://authorservices.taylorandfrancis.com/publishing-your-research/moving-through-production/copyright-for-journal-authors/#

About This Article

Medical Disclaimer

The content of this article is not intended to be a substitute for professional medical advice, examination, diagnosis, or treatment. You should always contact your doctor or other qualified healthcare professional before starting, changing, or stopping any kind of health treatment.

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To start a medical case study report, first choose a title that clearly reflects the contents of the report. You’ll also need to list any participating authors and develop a list of keywords, as well as an abstract summarizing the report. Your report will need to include an introduction summarizing the context of the report, as well as a detailed presentation of the case. Don’t forget to include a thorough citation list and acknowledgements of anyone else who participated in the study. For more tips from our Medical co-author, including how to get your case study report published, keep reading! Did this summary help you? Yes No

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41 Instructions for your Clinical Case Study assignment

The purpose of this assignment is for you to demonstrate your understanding of the concepts and issues presented in this course.  Your case study should be based upon yourself, and may be factual, fictional, or some mix of the two. You are NOT required to disclose any personal or sensitive information.

A large collection of fictional case studies are available for your review as you prepare to write your personal clinical case study.

A case analysis consists of several components:

• demographics
• psycho-social factors
• medical factors
• instruments
• using the multi-axial DSM-IV classification system
• predisposing factors
• precipitating factors
• presenting symptoms

(Here is a link to a sample case history: https://www.fmhs.auckland.ac.nz/assets/fmhs/som/psychmed/docs/writing_a_psychiatry_case_study.pdf )

Your assignment:

Part 1: Write your self analysis

• minimum length: 2000 original words
• submit to the SafeAssign  drop box on or before the final day of the Module 4 discussion forums
• This assignment is graded via the rubric below.

Part 2: Discuss the analyses

• Submit to the Self-analysis discussion forum on or before the start of Module 5
• Facilitate the discussion of your self-analysis
• Be an active participant in the discussion of at least 2 other students’ self-analyses
• Self-analysis dIscussions continue until the Module 5 discussion forums end.
• This forum is graded via the same discussion forum rubric used for the issue/topic discussions.

((Note: This assignment required a drop box and a “symposium” discussion forum.)

Abnormal Psychology Copyright © 2017 by Lumen Learning is licensed under a Creative Commons Attribution 4.0 International License , except where otherwise noted.

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What Is a Case Study?

Weighing the pros and cons of this method of research

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."

PICO: Form a Focused Clinical Question

• 1. Ask: PICO(T) Question
• 2. Align: Levels of Evidence
• 3a. Acquire: Resource Types
• 3b. Acquire: Searching
• 4. Appraise
• Primary vs. Secondary Sources
• Case Study Example
• Practice PICO

Formulate a Clinical Question from a Case Study

• Case: Hypertension

I: Intervention

C: comparison.

• PICO: Putting It Together

Clinical Scenario

A 68-year-old female patient has recently been diagnosed with high blood pressure. She is otherwise healthy and active. You need to decide whether to prescribe her a beta-blocker or an ACE inhibiter.

Image:  "Blood pressure measuring. Doctor and patient. Health care."  by  agilemktg1  is marked with  CC PDM 1.0

► Click on the P: Patient tab to proceed in developing a clinical question.

(Case study from EBM Librarian: Teaching Tools: Scenarios .)

Consider when choosing your patient/problem:

• What are the most important characteristics?
• Relevant demographic factors
• The setting

Patient: adult hypertensive female

Image: "Nurse measuring blood pressure of senior woman at home. Looking at camera, smiling.?"  by  agilemktg1  is marked with  CC PDM 1.0

► Click on the I: Intervention tab to proceed in developing a clinical question.

Consider for your intervention:

• What is the main intervention, treatment, diagnostic test, procedure, or exposure?
• Think of dosage, frequency, duration, and mode of delivery

Intervention: beta-blocker

Image:  "Atenolol Blood Pressure Tablets Image 4"  by  Doctor4U_UK  is licensed under  CC BY 2.0

► Click on the C: Comparison tab to proceed in developing a clinical question.

Consider for your comparison:

• Inactive control intervention: Placebo, standard care, no treatment
• Active control intervention: A different drug, dose, or kind of therapy

Comparison: ACE   inhibiter

Image:  "Ramipril Blood Pressure Capsules Image 5"  by  Doctor4U_UK  is licensed under  CC BY 2.0

► Click on the O: Outcome  tab to proceed in developing a clinical question.

Consider for your outcome:

• Be specific and make it measurable
• It can be something objective or subjective

Outcome: relief of symptoms; controlled blood pressure

Image:  "File:BP B6 Connect blood pressure monitor.png"  by  百略醫學  is licensed under  CC BY-SA 4.0

► Click on the PICO: Putting It Together  tab to proceed in developing a clinical question.

Formulate a PICO Question

Answerable PICO Question: In middle-aged adult females with hypertension, are beta blockers more effective than ACE inhibiters in controlling blood pressure?

Image:  "Dagstuhl 2008-02-01 - 37"  by  Nic's events  is licensed under  CC BY-SA 2.0

Suggested MeSH Terms:  Adrenergic beta-Antagonists/therapeutic use; Angiotensin-Converting Enzyme Inhibitors/therapeutic use; hypertension/drug therapy

Tip: Incorporating sex into the search may not be necessary unless there is a significant difference between males and females in relevant studies. 

Click "Next" below to practice formulating clinical questions using PICO format.

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• Knowledge Base

Methodology

• What Is a Case Study? | Definition, Examples & Methods

What Is a Case Study? | Definition, Examples & Methods

Published on May 8, 2019 by Shona McCombes . Revised on November 20, 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organization, 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 analyze the case, other interesting articles.

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.

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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

TipIf your research is more practical in nature and aims to simultaneously investigate an issue as you solve it, consider conducting action research instead.

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.

Example of an outlying case studyIn the 1960s the town of Roseto, Pennsylvania was discovered to have extremely low rates of heart disease compared to the US average. It became an important case study for understanding previously neglected causes of heart disease.

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

Example of a representative case studyIn the 1920s, two sociologists used Muncie, Indiana as a case study of a typical American city that supposedly exemplified the changing culture of the US at the time.

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.

Example of a mixed methods case studyFor a case study of a wind farm development in a rural area, you could collect quantitative data on employment rates and business revenue, collect qualitative data on local people’s perceptions and experiences, and analyze local and national media coverage of the development.

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

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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 analyze 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.

If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.

• Normal distribution
• Degrees of freedom
• Null hypothesis
• Discourse analysis
• Control groups
• Mixed methods research
• Non-probability sampling
• Quantitative research
• Ecological validity

Research bias

• Rosenthal effect
• Implicit bias
• Cognitive bias
• Selection bias
• Negativity bias
• Status quo bias

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• Open access
• Published: 27 June 2011

The case study approach

• Sarah Crowe 1 ,
• Kathrin Cresswell 2 ,
• Ann Robertson 2 ,
• Guro Huby 3 ,
• Anthony Avery 1 &
• Aziz Sheikh 2  

BMC Medical Research Methodology volume  11 , Article number:  100 ( 2011 ) Cite this article

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The case study approach allows in-depth, multi-faceted explorations of complex issues in their real-life settings. The value of the case study approach is well recognised in the fields of business, law and policy, but somewhat less so in health services research. Based on our experiences of conducting several health-related case studies, we reflect on the different types of case study design, the specific research questions this approach can help answer, the data sources that tend to be used, and the particular advantages and disadvantages of employing this methodological approach. The paper concludes with key pointers to aid those designing and appraising proposals for conducting case study research, and a checklist to help readers assess the quality of case study reports.

Peer Review reports

Introduction

The case study approach is particularly useful to employ when there is a need to obtain an in-depth appreciation of an issue, event or phenomenon of interest, in its natural real-life context. Our aim in writing this piece is to provide insights into when to consider employing this approach and an overview of key methodological considerations in relation to the design, planning, analysis, interpretation and reporting of case studies.

The illustrative 'grand round', 'case report' and 'case series' have a long tradition in clinical practice and research. Presenting detailed critiques, typically of one or more patients, aims to provide insights into aspects of the clinical case and, in doing so, illustrate broader lessons that may be learnt. In research, the conceptually-related case study approach can be used, for example, to describe in detail a patient's episode of care, explore professional attitudes to and experiences of a new policy initiative or service development or more generally to 'investigate contemporary phenomena within its real-life context' [ 1 ]. Based on our experiences of conducting a range of case studies, we reflect on when to consider using this approach, discuss the key steps involved and illustrate, with examples, some of the practical challenges of attaining an in-depth understanding of a 'case' as an integrated whole. In keeping with previously published work, we acknowledge the importance of theory to underpin the design, selection, conduct and interpretation of case studies[ 2 ]. In so doing, we make passing reference to the different epistemological approaches used in case study research by key theoreticians and methodologists in this field of enquiry.

This paper is structured around the following main questions: What is a case study? What are case studies used for? How are case studies conducted? What are the potential pitfalls and how can these be avoided? We draw in particular on four of our own recently published examples of case studies (see Tables 1 , 2 , 3 and 4 ) and those of others to illustrate our discussion[ 3 – 7 ].

What is a case study?

A case study is a research approach that is used to generate an in-depth, multi-faceted understanding of a complex issue in its real-life context. It is an established research design that is used extensively in a wide variety of disciplines, particularly in the social sciences. A case study can be defined in a variety of ways (Table 5 ), the central tenet being the need to explore an event or phenomenon in depth and in its natural context. It is for this reason sometimes referred to as a "naturalistic" design; this is in contrast to an "experimental" design (such as a randomised controlled trial) in which the investigator seeks to exert control over and manipulate the variable(s) of interest.

Stake's work has been particularly influential in defining the case study approach to scientific enquiry. He has helpfully characterised three main types of case study: intrinsic , instrumental and collective [ 8 ]. An intrinsic case study is typically undertaken to learn about a unique phenomenon. The researcher should define the uniqueness of the phenomenon, which distinguishes it from all others. In contrast, the instrumental case study uses a particular case (some of which may be better than others) to gain a broader appreciation of an issue or phenomenon. The collective case study involves studying multiple cases simultaneously or sequentially in an attempt to generate a still broader appreciation of a particular issue.

These are however not necessarily mutually exclusive categories. In the first of our examples (Table 1 ), we undertook an intrinsic case study to investigate the issue of recruitment of minority ethnic people into the specific context of asthma research studies, but it developed into a instrumental case study through seeking to understand the issue of recruitment of these marginalised populations more generally, generating a number of the findings that are potentially transferable to other disease contexts[ 3 ]. In contrast, the other three examples (see Tables 2 , 3 and 4 ) employed collective case study designs to study the introduction of workforce reconfiguration in primary care, the implementation of electronic health records into hospitals, and to understand the ways in which healthcare students learn about patient safety considerations[ 4 – 6 ]. Although our study focusing on the introduction of General Practitioners with Specialist Interests (Table 2 ) was explicitly collective in design (four contrasting primary care organisations were studied), is was also instrumental in that this particular professional group was studied as an exemplar of the more general phenomenon of workforce redesign[ 4 ].

What are case studies used for?

According to Yin, case studies can be used to explain, describe or explore events or phenomena in the everyday contexts in which they occur[ 1 ]. These can, for example, help to understand and explain causal links and pathways resulting from a new policy initiative or service development (see Tables 2 and 3 , for example)[ 1 ]. In contrast to experimental designs, which seek to test a specific hypothesis through deliberately manipulating the environment (like, for example, in a randomised controlled trial giving a new drug to randomly selected individuals and then comparing outcomes with controls),[ 9 ] the case study approach lends itself well to capturing information on more explanatory ' how ', 'what' and ' why ' questions, such as ' how is the intervention being implemented and received on the ground?'. The case study approach can offer additional insights into what gaps exist in its delivery or why one implementation strategy might be chosen over another. This in turn can help develop or refine theory, as shown in our study of the teaching of patient safety in undergraduate curricula (Table 4 )[ 6 , 10 ]. Key questions to consider when selecting the most appropriate study design are whether it is desirable or indeed possible to undertake a formal experimental investigation in which individuals and/or organisations are allocated to an intervention or control arm? Or whether the wish is to obtain a more naturalistic understanding of an issue? The former is ideally studied using a controlled experimental design, whereas the latter is more appropriately studied using a case study design.

Case studies may be approached in different ways depending on the epistemological standpoint of the researcher, that is, whether they take a critical (questioning one's own and others' assumptions), interpretivist (trying to understand individual and shared social meanings) or positivist approach (orientating towards the criteria of natural sciences, such as focusing on generalisability considerations) (Table 6 ). Whilst such a schema can be conceptually helpful, it may be appropriate to draw on more than one approach in any case study, particularly in the context of conducting health services research. Doolin has, for example, noted that in the context of undertaking interpretative case studies, researchers can usefully draw on a critical, reflective perspective which seeks to take into account the wider social and political environment that has shaped the case[ 11 ].

How are case studies conducted?

Here, we focus on the main stages of research activity when planning and undertaking a case study; the crucial stages are: defining the case; selecting the case(s); collecting and analysing the data; interpreting data; and reporting the findings.

Defining the case

Carefully formulated research question(s), informed by the existing literature and a prior appreciation of the theoretical issues and setting(s), are all important in appropriately and succinctly defining the case[ 8 , 12 ]. Crucially, each case should have a pre-defined boundary which clarifies the nature and time period covered by the case study (i.e. its scope, beginning and end), the relevant social group, organisation or geographical area of interest to the investigator, the types of evidence to be collected, and the priorities for data collection and analysis (see Table 7 )[ 1 ]. A theory driven approach to defining the case may help generate knowledge that is potentially transferable to a range of clinical contexts and behaviours; using theory is also likely to result in a more informed appreciation of, for example, how and why interventions have succeeded or failed[ 13 ].

For example, in our evaluation of the introduction of electronic health records in English hospitals (Table 3 ), we defined our cases as the NHS Trusts that were receiving the new technology[ 5 ]. Our focus was on how the technology was being implemented. However, if the primary research interest had been on the social and organisational dimensions of implementation, we might have defined our case differently as a grouping of healthcare professionals (e.g. doctors and/or nurses). The precise beginning and end of the case may however prove difficult to define. Pursuing this same example, when does the process of implementation and adoption of an electronic health record system really begin or end? Such judgements will inevitably be influenced by a range of factors, including the research question, theory of interest, the scope and richness of the gathered data and the resources available to the research team.

Selecting the case(s)

The decision on how to select the case(s) to study is a very important one that merits some reflection. In an intrinsic case study, the case is selected on its own merits[ 8 ]. The case is selected not because it is representative of other cases, but because of its uniqueness, which is of genuine interest to the researchers. This was, for example, the case in our study of the recruitment of minority ethnic participants into asthma research (Table 1 ) as our earlier work had demonstrated the marginalisation of minority ethnic people with asthma, despite evidence of disproportionate asthma morbidity[ 14 , 15 ]. In another example of an intrinsic case study, Hellstrom et al.[ 16 ] studied an elderly married couple living with dementia to explore how dementia had impacted on their understanding of home, their everyday life and their relationships.

For an instrumental case study, selecting a "typical" case can work well[ 8 ]. In contrast to the intrinsic case study, the particular case which is chosen is of less importance than selecting a case that allows the researcher to investigate an issue or phenomenon. For example, in order to gain an understanding of doctors' responses to health policy initiatives, Som undertook an instrumental case study interviewing clinicians who had a range of responsibilities for clinical governance in one NHS acute hospital trust[ 17 ]. Sampling a "deviant" or "atypical" case may however prove even more informative, potentially enabling the researcher to identify causal processes, generate hypotheses and develop theory.

In collective or multiple case studies, a number of cases are carefully selected. This offers the advantage of allowing comparisons to be made across several cases and/or replication. Choosing a "typical" case may enable the findings to be generalised to theory (i.e. analytical generalisation) or to test theory by replicating the findings in a second or even a third case (i.e. replication logic)[ 1 ]. Yin suggests two or three literal replications (i.e. predicting similar results) if the theory is straightforward and five or more if the theory is more subtle. However, critics might argue that selecting 'cases' in this way is insufficiently reflexive and ill-suited to the complexities of contemporary healthcare organisations.

The selected case study site(s) should allow the research team access to the group of individuals, the organisation, the processes or whatever else constitutes the chosen unit of analysis for the study. Access is therefore a central consideration; the researcher needs to come to know the case study site(s) well and to work cooperatively with them. Selected cases need to be not only interesting but also hospitable to the inquiry [ 8 ] if they are to be informative and answer the research question(s). Case study sites may also be pre-selected for the researcher, with decisions being influenced by key stakeholders. For example, our selection of case study sites in the evaluation of the implementation and adoption of electronic health record systems (see Table 3 ) was heavily influenced by NHS Connecting for Health, the government agency that was responsible for overseeing the National Programme for Information Technology (NPfIT)[ 5 ]. This prominent stakeholder had already selected the NHS sites (through a competitive bidding process) to be early adopters of the electronic health record systems and had negotiated contracts that detailed the deployment timelines.

It is also important to consider in advance the likely burden and risks associated with participation for those who (or the site(s) which) comprise the case study. Of particular importance is the obligation for the researcher to think through the ethical implications of the study (e.g. the risk of inadvertently breaching anonymity or confidentiality) and to ensure that potential participants/participating sites are provided with sufficient information to make an informed choice about joining the study. The outcome of providing this information might be that the emotive burden associated with participation, or the organisational disruption associated with supporting the fieldwork, is considered so high that the individuals or sites decide against participation.

In our example of evaluating implementations of electronic health record systems, given the restricted number of early adopter sites available to us, we sought purposively to select a diverse range of implementation cases among those that were available[ 5 ]. We chose a mixture of teaching, non-teaching and Foundation Trust hospitals, and examples of each of the three electronic health record systems procured centrally by the NPfIT. At one recruited site, it quickly became apparent that access was problematic because of competing demands on that organisation. Recognising the importance of full access and co-operative working for generating rich data, the research team decided not to pursue work at that site and instead to focus on other recruited sites.

Collecting the data

In order to develop a thorough understanding of the case, the case study approach usually involves the collection of multiple sources of evidence, using a range of quantitative (e.g. questionnaires, audits and analysis of routinely collected healthcare data) and more commonly qualitative techniques (e.g. interviews, focus groups and observations). The use of multiple sources of data (data triangulation) has been advocated as a way of increasing the internal validity of a study (i.e. the extent to which the method is appropriate to answer the research question)[ 8 , 18 – 21 ]. An underlying assumption is that data collected in different ways should lead to similar conclusions, and approaching the same issue from different angles can help develop a holistic picture of the phenomenon (Table 2 )[ 4 ].

Brazier and colleagues used a mixed-methods case study approach to investigate the impact of a cancer care programme[ 22 ]. Here, quantitative measures were collected with questionnaires before, and five months after, the start of the intervention which did not yield any statistically significant results. Qualitative interviews with patients however helped provide an insight into potentially beneficial process-related aspects of the programme, such as greater, perceived patient involvement in care. The authors reported how this case study approach provided a number of contextual factors likely to influence the effectiveness of the intervention and which were not likely to have been obtained from quantitative methods alone.

In collective or multiple case studies, data collection needs to be flexible enough to allow a detailed description of each individual case to be developed (e.g. the nature of different cancer care programmes), before considering the emerging similarities and differences in cross-case comparisons (e.g. to explore why one programme is more effective than another). It is important that data sources from different cases are, where possible, broadly comparable for this purpose even though they may vary in nature and depth.

Analysing, interpreting and reporting case studies

Making sense and offering a coherent interpretation of the typically disparate sources of data (whether qualitative alone or together with quantitative) is far from straightforward. Repeated reviewing and sorting of the voluminous and detail-rich data are integral to the process of analysis. In collective case studies, it is helpful to analyse data relating to the individual component cases first, before making comparisons across cases. Attention needs to be paid to variations within each case and, where relevant, the relationship between different causes, effects and outcomes[ 23 ]. Data will need to be organised and coded to allow the key issues, both derived from the literature and emerging from the dataset, to be easily retrieved at a later stage. An initial coding frame can help capture these issues and can be applied systematically to the whole dataset with the aid of a qualitative data analysis software package.

The Framework approach is a practical approach, comprising of five stages (familiarisation; identifying a thematic framework; indexing; charting; mapping and interpretation) , to managing and analysing large datasets particularly if time is limited, as was the case in our study of recruitment of South Asians into asthma research (Table 1 )[ 3 , 24 ]. Theoretical frameworks may also play an important role in integrating different sources of data and examining emerging themes. For example, we drew on a socio-technical framework to help explain the connections between different elements - technology; people; and the organisational settings within which they worked - in our study of the introduction of electronic health record systems (Table 3 )[ 5 ]. Our study of patient safety in undergraduate curricula drew on an evaluation-based approach to design and analysis, which emphasised the importance of the academic, organisational and practice contexts through which students learn (Table 4 )[ 6 ].

Case study findings can have implications both for theory development and theory testing. They may establish, strengthen or weaken historical explanations of a case and, in certain circumstances, allow theoretical (as opposed to statistical) generalisation beyond the particular cases studied[ 12 ]. These theoretical lenses should not, however, constitute a strait-jacket and the cases should not be "forced to fit" the particular theoretical framework that is being employed.

When reporting findings, it is important to provide the reader with enough contextual information to understand the processes that were followed and how the conclusions were reached. In a collective case study, researchers may choose to present the findings from individual cases separately before amalgamating across cases. Care must be taken to ensure the anonymity of both case sites and individual participants (if agreed in advance) by allocating appropriate codes or withholding descriptors. In the example given in Table 3 , we decided against providing detailed information on the NHS sites and individual participants in order to avoid the risk of inadvertent disclosure of identities[ 5 , 25 ].

What are the potential pitfalls and how can these be avoided?

The case study approach is, as with all research, not without its limitations. When investigating the formal and informal ways undergraduate students learn about patient safety (Table 4 ), for example, we rapidly accumulated a large quantity of data. The volume of data, together with the time restrictions in place, impacted on the depth of analysis that was possible within the available resources. This highlights a more general point of the importance of avoiding the temptation to collect as much data as possible; adequate time also needs to be set aside for data analysis and interpretation of what are often highly complex datasets.

Case study research has sometimes been criticised for lacking scientific rigour and providing little basis for generalisation (i.e. producing findings that may be transferable to other settings)[ 1 ]. There are several ways to address these concerns, including: the use of theoretical sampling (i.e. drawing on a particular conceptual framework); respondent validation (i.e. participants checking emerging findings and the researcher's interpretation, and providing an opinion as to whether they feel these are accurate); and transparency throughout the research process (see Table 8 )[ 8 , 18 – 21 , 23 , 26 ]. Transparency can be achieved by describing in detail the steps involved in case selection, data collection, the reasons for the particular methods chosen, and the researcher's background and level of involvement (i.e. being explicit about how the researcher has influenced data collection and interpretation). Seeking potential, alternative explanations, and being explicit about how interpretations and conclusions were reached, help readers to judge the trustworthiness of the case study report. Stake provides a critique checklist for a case study report (Table 9 )[ 8 ].

Conclusions

The case study approach allows, amongst other things, critical events, interventions, policy developments and programme-based service reforms to be studied in detail in a real-life context. It should therefore be considered when an experimental design is either inappropriate to answer the research questions posed or impossible to undertake. Considering the frequency with which implementations of innovations are now taking place in healthcare settings and how well the case study approach lends itself to in-depth, complex health service research, we believe this approach should be more widely considered by researchers. Though inherently challenging, the research case study can, if carefully conceptualised and thoughtfully undertaken and reported, yield powerful insights into many important aspects of health and healthcare delivery.

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Acknowledgements

We are grateful to the participants and colleagues who contributed to the individual case studies that we have drawn on. This work received no direct funding, but it has been informed by projects funded by Asthma UK, the NHS Service Delivery Organisation, NHS Connecting for Health Evaluation Programme, and Patient Safety Research Portfolio. We would also like to thank the expert reviewers for their insightful and constructive feedback. Our thanks are also due to Dr. Allison Worth who commented on an earlier draft of this manuscript.

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School of Health in Social Science, The University of Edinburgh, Edinburgh, UK

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AS conceived this article. SC, KC and AR wrote this paper with GH, AA and AS all commenting on various drafts. SC and AS are guarantors.

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Crowe, S., Cresswell, K., Robertson, A. et al. The case study approach. BMC Med Res Methodol 11 , 100 (2011). https://doi.org/10.1186/1471-2288-11-100

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Case Reports, Case Series – From Clinical Practice to Evidence-Based Medicine in Graduate Medical Education

Jerry w sayre.

1 Family Medicine, North Florida Regional Medical Center

Hale Z Toklu

2 Graduate Medical Education, North Florida Regional Medical Center

Joseph Mazza

3 Department of Clinical Research, Marshfield Clinic Research Foundation

Steven Yale

4 Internal Medicine, University of Central Florida College of Medicine

Case reports and case series or case study research are descriptive studies that are prepared for illustrating novel, unusual, or atypical features identified in patients in medical practice, and they potentially generate new research questions. They are empirical inquiries or investigations of a patient or a group of patients in a natural, real-world clinical setting. Case study research is a method that focuses on the contextual analysis of a number of events or conditions and their relationships. There is disagreement among physicians on the value of case studies in the medical literature, particularly for educators focused on teaching evidence-based medicine (EBM) for student learners in graduate medical education. Despite their limitations, case study research is a beneficial tool and learning experience in graduate medical education and among novice researchers. The preparation and presentation of case studies can help students and graduate medical education programs evaluate and apply the six American College of Graduate Medical Education (ACGME) competencies in the areas of medical knowledge, patient care, practice-based learning, professionalism, systems-based practice, and communication. A goal in graduate medical education should be to assist residents to expand their critical thinking, problem-solving, and decision-making skills. These attributes are required in the teaching and practice of EBM. In this aspect, case studies provide a platform for developing clinical skills and problem-based learning methods. Hence, graduate medical education programs should encourage, assist, and support residents in the publication of clinical case studies; and clinical teachers should encourage graduate students to publish case reports during their graduate medical education.

Introduction

Case reports and case series or case study research   are descriptive studies to present patients in their natural clinical setting. Case reports, which generally consist of three or fewer patients, are prepared to illustrate features in the practice of medicine and potentially create new research questions that may contribute to the acquisition of additional knowledge in the literature. Case studies involve multiple patients; they are a qualitative research method and include in-depth analyses or experiential inquiries of a person or group in their real-world setting. Case study research focuses on the contextual analysis of several events or conditions and their relationships [ 1 ]. In addition to their teaching value for students and graduate medical education programs, case reports provide a starting point for novice investigators, which may prepare and encourage them to seek more contextual writing experiences for future research investigation. It may also provide senior physicians with clues about emerging epidemics or a recognition of previously unrecognized syndromes. Limitations primarily involve the lack of generalizability and implications in clinical practice, which are factors extraneous to the learning model (Table ​ (Table1 1 ).

There is disagreement among physicians on the value of case reports in the medical literature and in evidence-based medicine (EBM) [ 2 ]. EBM aims to optimize decision-making by using evidence from well-conducted research. Therefore, not all data has the same value as the evidence. The pyramid (Figure ​ (Figure1) 1 ) classifies publications based on their study outlines and according to the power of evidence they provide [ 2 - 3 ]. In the classical pyramid represented below, systematic reviews and a meta-analysis are expected to provide the strongest evidence. However, a recent modification of the pyramid was suggested by Murad et al. [ 2 ]: the meta-analysis and systematic reviews are removed from the pyramid and are suggested to be a lens through which evidence is viewed (Figure 1 ). 

Modified from Murad et al. [ 2 ]

Because case reports do not rank highly in the hierarchy of evidence and are not frequently cited, as they describe the clinical circumstances of single patients, they are seldom published by high-impact medical journals. However, case reports are proposed to have significant educational value because they advance medical knowledge and constitute evidence for EBM. In addition, well-developed publication resources can be difficult to find, especially for medical residents; those that do exist vary in quality and may not be suitable for the aim and scope of the journals. Over the last several years, a number (approximately 160) of new peer-reviewed journals that focus on publishing case reports have emerged. These are mostly open-access journals with considerably high acceptance rates [ 4 ]. Packer et al. reported a 6% publication rate for case reports [ 5 ]; however, they did not disclose the number of papers submitted but rejected and neither did they state whether any of the reported cases were submitted to open-access journals.

The development of open-access journals has created a new venue for students and faculty to publish. In contrast to subscription-based and peer-reviewed e-journals, many of these new case report journals are not adequately reviewed and, instead, have a questionably high acceptance rate [ 4 ]. There, however, remains the issue of the fee-based publication of case reports in open-access journals without proper peer reviews, which increases the burden of scientific literature. Trainees should be made aware of the potential for academic dilution, particularly with some open-access publishers. While case reports with high-quality peer reviews are associated with a relatively low acceptance rate, this rigorous process introduces trainees to the experience and expectations of peer reviews and addresses other issues or flaws not considered prior to submission. We believe that these are important skills that should be emphasized and experienced during training, and authors should seek these journals for the submission of their manuscripts.

Importance of Case Reports and Case Series in Graduate Medical Education

The Accreditation Council for Graduate Medical Education (ACGME) has challenged faculties to adapt teaching methodologies to accommodate the different learning modalities of the next generation of physicians. As evidenced by its implementation by ACGME, competency-based medical education is rapidly gaining international acceptance, moving from classic didactic lectures to self-directed learning opportunities with experiential learning aids in the development of critical cognitive and scholarly skills. As graduate medical educators, we are in agreement with Packer et al. about the value of the educational benefits resulting from student-generated case reports [ 5 ]. Case study assignments help residents develop a variety of key skills, as previously described. EBM is an eventual decision-making process for executing the most appropriate treatment approach by using the tools that are compatible with the national health policy, medical evidence, and the personal factors of physician and patient (Figure ​ (Figure2). The 2 ). The practice of identifying and developing a case study creates a learning opportunity for listening skills and appreciation for the patient’s narrative as well as for developing critical learning and thinking skills that are directly applicable to the practice of EBM. This critically important process simultaneously enhances both the medical and the humanistic importance of physician-patient interaction. In addition, case-based learning is an active learner-centered approach for medical students and residents. It serves as a curricular context, which can promote the retention of information and evidence-based thinking.

Modified from Toklu et al. 2015 [ 3 ]

The value of case studies in the medical literature is controversial among physicians. Despite their limitations, clinical case reports and case series are beneficial tools in graduate medical education. The preparation and presentation of case studies can help students and residents acquire and apply clinical competencies in the areas of medical knowledge, practice-based learning, systems-based practice, professionalism, and communication. In this aspect, case studies provide a tool for developing clinical skills through problem-based learning methods. As a result, journals should encourage the publication of clinical case studies from graduate medical education programs through a commonly applied peer-review process, and clinical teachers should promote medical residents to publish case reports during their graduate medical education.

The content published in Cureus is the result of clinical experience and/or research by independent individuals or organizations. Cureus is not responsible for the scientific accuracy or reliability of data or conclusions published herein. All content published within Cureus is intended only for educational, research and reference purposes. Additionally, articles published within Cureus should not be deemed a suitable substitute for the advice of a qualified health care professional. Do not disregard or avoid professional medical advice due to content published within Cureus.

The authors have declared that no competing interests exist.

Using Reverse Case Studies for Clinical Learning

Authored by.

Linda Silvestri , PhD, RN, FAAN

As nurse educators, certainly we are concerned about the quality of education for our nursing students and their didactic and clinical learning experiences. Some nursing programs across the country have been using “think like a nurse” strategies such as case studies in the classroom and clinical simulation learning experiences in the nursing lab. However, during this time of crisis with COVID-19 threatening our environment and our health we are challenged to make required and necessary changes. Resultantly, both of these innovative learning strategies are stripped away as an option for nurse educators. We moved very swiftly from on-campus and in-person classroom and clinical sessions to online platform learning experiences. This switch in learning environments has been a very time consuming, very challenging and a somewhat overwhelming task.

The transition from classroom learning to online learning required immediate innovation and the creation of several learning strategies to meet classroom learning objectives. Then, the question became: “What do we do about clinical and meeting clinical outcomes?” This was the perplexing task because when we think about clinical learning we think about “encounters” and “hands-on” types of experiences.  To think about providing these experiences in an entirely different and very nontraditional way can be daunting.

Reverse Case Study

A reverse case study is a strategy in which students develop one or more scenarios about a patient from limited data presented to them.  For many years, the reverse case study approach has been used as a learning strategy in the classroom to promote critical thinking and decision making about a patient’s path of care. But, why can’t we adapt this learning strategy so that it can be used as a clinical learning experience? Beyer (2011) notes that a reverse case study approach provides students with a collaborative, innovative, and active learning experience, builds on previous learned information, and applies the information to new content. This promotes critical thinking and problem solving. Isn’t this a characteristic of a sound clinical learning experience? Isn’t this what we need our students to do in order to become nurses who are able to make clinical judgments and provide safe patient care?

We know direct patient care is the best experience for our students and we need to think about what our students are missing out on by not having access to this type of engagement. Students would be missing out on the interactions with their patients and the important patient-nurse conversations, which are a few of the experiences that help them to develop the attributes of a professional nurse. Additionally, they miss out on the psychomotor skills.

As a seasoned educator, I would venture to say success in our students is measured by meeting clinical outcomes and that we as educators can thrive in this new and uncomfortable environment with a deliberate shift in thinking and problem-solving. There may be deficits, and so long as we are deliberate, we can develop innovative plans to work with our students on these missing pieces. To “think like a nurse” is the skill that we need to strive for. All other things missed out in direct patient care experiences, particularly the psychomotor skills, can be addressed in some new innovative way. The reverse case study approach can be implemented in a way that addresses most of your students’ clinical learning needs; and where deficits exist, contingency plans can be thought out and put in place at a later time.

There are different ways you can apply the reverse case study approach as a clinical experience. And, you can include your own creative and innovative adaptive approaches to the clinical assignment. Two methods of implementation along with a general set of guidelines should be considered. One method is to provide students with a short three- to five sentence scenario and a list of medications. These scenarios can be developed or you can use one of the many Elsevier resources available to seek an appropriate and already created case study. An alternative method is to create an assignment of a patient from the actual clinical agency in which the students are normally assigned to practice. For either method, students develop complete case study scenarios following prescriptive faculty guidelines. A nursing care plan or other form of care planning document used in your nursing program can be incorporated for creating the case scenarios and care planning. Examples of these two methods follow, along with some suggested guidelines for implementation.

Some Things to Think About

Depending on how you intend to implement the reverse case study will guide questions you need to ask yourself or consider before implementation. Some of these questions include the following:

• What is your state board of nursing approving regarding alternative clinical activities during a crisis such as COVID-19?
• What has your nursing program agreed upon for alternate clinical activities?
• What is the level of your clinical group of nursing students in your RN program? Sophomore/Beginning, Junior/intermediate, or Senior/Advanced students? Or, in your PN program, are your students at Level 1 or Level 2?
• What are your clinical outcomes?
• Do you have access to electronic health records (EHRs) at the clinical agency in which your students are assigned and if so, do you have permission to use patient information for an “at home” assignment?
• Are Health Insurance Portability and Accountability Act (HIPAA) standards and confidentiality rules being followed?
• Do you have a web conferencing platform you can use to augment this approach?

Reverse Case Study: Brief Scenario and Medication List Approach

One method of implementing a reverse case study approach is by providing students with a short three- to five sentence scenario and a list of medications. With this approach, you want to provide data that addresses the learning level of the student and meets the learning needs and clinical outcomes of the clinical experience. Following is an example of a brief case scenario on which the student would build for the sophomore/beginning, junior/intermediate, and senior/advanced nursing student in an RN program. These case scenarios can be adapted and used in a PN program based on the student’s level of learning in the program.

RN Sophomore/Beginning Student and PN Level 1 Student

The patient is a 58-year-old who was just diagnosed with diabetes mellitus. Glucose finger stick testing, a 1400 calorie diabetic diet, and a moderate exercise plan is prescribed. Insulin glargine (Toujeo SoloStar) 15 units daily and insulin aspart (Novolog) is prescribed before meals on a sliding scale as follows: 100 – 150 mg/dL (5.5 – 8.3 mmol/L) = 1 unit; 151 – 200 mg/dL (8.4 – 11.1 mmol/L) = 2 units; 201 – 250 mg/dL (11.2 – 13.9 mmol/L) = 3 units; > 250 mg/dL (13.9 mmol/L) = contact acute care nurse practitioner (ACNP).

RN Junior/Intermediate Student and PN Level 2 Student

The patient is a 70-year-old who has a 20-year history of diabetes mellitus. The patient is admitted to the hospital for an above the knee amputation of the right leg. Home medications include insulin glargine (Toujeo SoloStar) 15 units daily and insulin aspart (Novolog) before meals on a sliding scale as follows: 100 – 150 mg/dL (5.5 – 8.3 mmol/L) = 1 unit; 151 – 200 mg/dL (8.4 – 11.1 mmol/L) = 2 units; 201 – 250 mg/dL (11.2 – 13.9 mmol/L) = 3 units; > 250 mg/dL (13.9 mmol/L) = contact ACNP.

RN Senior/Advanced Student

The patient is a 70-year-old who has a 20-year history of diabetes mellitus. Home medications include insulin glargine (Toujeo SoloStar) 15 units daily and insulin aspart (Novolog) before meals on a sliding scale as follows: 100 – 150 mg/dL (5.5 – 8.3 mmol/L) = 1 unit; 151 – 200 mg/dL (8.4 – 11.1 mmol/L) = 2 units; 201 – 250 mg/dL (11.2 – 13.9 mmol/L) = 3 units; > 250 mg/dL (13.9 mmol/L) = contact ACNP. The patient is brought to the emergency department. Presentation includes altered level of consciousness and confusion. Blood glucose is 900 mg/dL (50.1 mmol/L).

Reverse Case Study: Actual Clinical Assignment Approach

With this approach, you would need to have access to the EHRs of the clinical agency and permission to select patients for the “at home” clinical assignment. All patient identifying information would need to be removed from the student assignment. An assigned patient case can be given to the student as would normally be done if they were actually attending clinical. Some initial patient details can be provided to students, such as age, diagnosis, initial presenting subjective and objective findings, medications prescribed, and the initial plan of care.

Guidelines for Implementation

You may have eight or more students in your clinical group and depending on the number of students, you may want to consider assigning students to groups of two or three.

Regardless of the approach you select, patient information can be provided via email to the student(s) on the morning of the clinical day (or on the evening before the clinical day if preferred), with a follow-up pre-clinical conference on the morning of the scheduled day of the simulated clinical experience.

Pre-Clinical Conference

The pre-clinical conference can be conducted via the online platform being used by your college or university. Per your preference, a one-hour (or longer as preferred) pre-clinical conference can be either with the entire clinical group or with each student group individually. Pre-clinical conference with the entire clinical group provides a more comprehensive learning experience for students. However, if you prefer to conference with each student group individually you would need to schedule time frames for each of the groups.

In preparation for the pre-clinical conference, the student should be provided with some time to do their initial research. You could plan a one- to two-hour time block for students to do this preparation. They should be instructed to complete the clinical care plan documents as if they were caring for the patient during an on-site clinical day. Students would begin their research using evidence-based resources to develop a case study consistent with the typical clinical presentation of the assigned patient, based on the diagnosis and other data provided.

The students then attend the scheduled pre-clinical conference to discuss priorities of care for their assigned patient and listen to their peers’ reports. The student would be required to identify any skills that would be anticipated to have been performed during clinical that day, such as activities of daily living, dressing changes, preparation for scheduled procedures and diagnostic tests, medication administration, patient teaching, home care and discharge planning, and any other anticipated activities or interventions based on the case study they developed. Details of how any procedures or activities that would be done should be described by the student.

Simulated Clinical Day

After the pre-clinical conference, the student will do their “at home” clinical and continue their research and prepare the remainder of the care plan documents as used by your nursing program. Again, the student would research using evidence-based resources to continue developing the case study. Students should include an assessment and expected findings, significant cues and an analysis of these cues, two priority client problems or hypotheses, a generated plan of care and how the plan would be implemented, and how outcomes would be evaluated. Laboratory and diagnostic studies anticipated to be prescribed and their results, and additional expected prescribed medications and other treatments should be addressed along with psychosocial data. The student should be expected to write their case study and story about how the clinical day unfolded, what they encountered, what unwanted events could occur based on the patient scenario and how these would be managed, and a description of any other activities they would encounter and how these activities would be implemented.

Post-Clinical Conference

The student will attend post-conference via the online platform. During the clinical conference, each student group will present the patient case study created. Along with the case study, students would present their clinical day, how it unfolded and progressed, and the data that they were expected to research during the simulated clinical day, as mentioned above. Because students did not engage in direct hands-on patient care and the instructor was not able to observe the student’s thinking process in an actual clinical setting, all sections of their required clinical documents should be completed and emailed to the instructor prior to the post-clinical conference time. Depending on the usual length of the clinical day, the time and length for the post-clinical conference can be determined by the instructor.

The idea of using a reverse case study approach as a clinical learning experience is one that should be considered. It requires the student to use evidence-based research to create their story. It is also a learning strategy that addresses multiple domains of learning within Bloom’s taxonomy. Although this learning strategy was thought of as an alternative for clinical learning during the COVID-19 crisis, it is one that can be used well beyond this crisis and as a complementary clinical learning experience or even as a substitute for clinical make-up if necessary. Additionally, this strategy emphasizes the importance of a case study approach for learning and its significant relationship to the Next Generation NCLEX® Test Plan.

Some References for Reverse Case Studies

Atkinson, T. (2014). The “Reverse Case Study:” Enhancing creativity in case-based instruction in leadership studies. Journal of Leadership Education, 13 (3), 118-128.

Beyer, D.A. (2011). Reverse case study: To think like a nurse. Journal of Nursing Education, 50 (1), 48-50.

Smallheer, B.A. (2016). Reverse case study: A new perspective on an existing teaching strategy. Nurse Educator, 41 (1), 7-8.

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