PEO framework for nursing research
Turn a broad nursing, health or social-care topic into a focused literature review question, useful search terms and a clearer evidence plan.
Use this guide to plan and understand your own work. Examples are study models and should not be submitted as your own assessment.
Turn this guide into a research plan
Open the app topic guide, search related nursing research resources or build your own PEO question step by step.
What does PEO mean?
PEO stands for Population, Exposure and Outcome. It helps you define who you are studying, which experience or situation matters, and what you want to understand.
Nursing students often use PEO for qualitative or exploratory questions, especially when a literature review examines experiences, perceptions, risks or the effect of a condition or environment.
It gives each part of the question a job, which makes keyword planning and evidence screening more deliberate.
Work through each PEO element
Start with plain language. You can refine terminology after the central relationship is clear.
Define the group
Be specific enough to guide the search without making the evidence base impossibly narrow.
Prompt: Which patients, professionals, carers or community are involved?
Name the experience
Identify the condition, service, environment, behaviour or situation you want to explore.
Prompt: What has the population experienced or been exposed to?
Clarify the result
State the experience, effect or change that the review needs to understand.
Prompt: What outcome, perception or impact matters to the question?
PEO compared with PICO
Neither framework is automatically better. Choose the one that matches the kind of evidence question you are asking.
PEO
Often useful for qualitative, experiential or exploratory nursing questions.
- Population
- Exposure
- Outcome
PICO
Often useful when comparing an intervention with another approach or usual care.
- Population
- Intervention
- Comparison
- Outcome
A nursing PEO question
This short example demonstrates the framework. Adapt the approach to your own module, population and evidence requirements.
How do communication approaches in healthcare settings affect the experiences of adults with learning disabilities?
Use the Library to compare structure and search terms
Move from the worked example into related guide topics and approved public learning resources. Use them for planning, not direct submission.
Use PEO to plan the review
List keywords and synonyms
Create alternatives for each concept, including clinical terms, everyday wording and database subject headings.
Combine concepts carefully
Use OR between synonyms and AND between the main PEO concepts. Test the search rather than assuming the first version is final.
Set inclusion and exclusion criteria
Decide which population, setting, evidence type, date range and language genuinely answer the question.
Record and refine
Keep a transparent search record. Explain why you refined terms, databases or criteria as the review developed.
Related research-method guides
From a PEO question to database searching
Follow a learning-disability nursing example through question framing, inclusion and exclusion criteria, database searches, references and evidence synthesis.
Treat the search terms, date limits and result counts as a teaching example. Check current databases, guidance and dates for your own literature review, then record every change you make.
Structure your nursing research with the clarity of the PEO framework, creating research questions that lead to meaningful insights and improved patient care.
Navigating nursing research often requires a structured approach, and the PEO (Population, Exposure, Outcome) framework is pivotal in providing this structure. This method is about defining the specific group, situation, and desired results in a study.
Applying the PEO Framework: A Sample from Learning Disability Nursing
Let’s apply the framework to a hypothetical study. Suppose you're investigating how communication in healthcare impacts individuals with learning disabilities. Here's how the framework shapes your research:
- Population: People with learning disabilities.
- Exposure: The communication methods used in healthcare settings.
- Outcome: The level of health inequality experienced.
This leads to a focused research question: "Which communication methods are most effective in minimising health inequality for individuals with learning disabilities?"
Developing Your Research With The PEO Framework For Learning Disability Learning
Detailed and precise study plan.
SAMPLE
Topic:
Communication is central in addressing health inequalities for people with learning disabilities
PEO framework and Research Question
Research question: How effective is communication in addressing health inequalities among people with learning disabilities?
Key search terms developed using the PICO framework are:-
P= people with learning disabilities
I= effective communication
C= none
O= health inequalities
Table 1:
Inclusion and exclusion criteria
|
|
Inclusion |
Exclusion |
|
Population |
People with learning disabilities |
Other people mental health challenges or general health conditions |
|
Intervetion |
Effective communication |
|
|
Comparison |
None |
|
|
Outcomes |
Health inequalities |
Other inequalities |
|
Research design |
Primary: qualitative and quantitative |
Systematic reviews, literature reviews, meta-analysis, grey literature |
|
Date of publication |
2014-2023. |
2013 and earlier |
|
Language of publication |
English language |
Other languages |
|
Geographical location |
United Kingdom |
The rest of the world |
Table 2: Literature Search Strategy
|
Databases |
Search Terms |
Results and inclusion criteria |
Included articles |
|
CINAHL |
accessible information or easy read AND people with learning disabilities or intellectual disabilities AND uk or england or britain or great britain or united kingdom |
44 results Limiters 2014-2023 (22) Academic journals (21) 21 filtered |
3 included |
|
Medline |
accessible information or easy read AND people with learning disabilities or intellectual disabilities AND uk or england or britain or great britain or united kingdom |
36 results 2014-2023 (27) Academic journals (27) 27 filtered |
5 included |
|
|
|
TOTAL |
8 included |
Included from CINAHL
- Homeyard, C. E., & Patelarou, E. (2018). To what extent are midwives adapting antenatal information for pregnant women with intellectual disabilities? A survey of NHS trusts in England. Public Health, 158, 25-30.
- Fish, R., Hatton, C., & Chauhan, U. (2017). “Tell me what they do to my body”: A survey to find out what information people with learning disabilities want with their medications. British journal of learning disabilities, 45(3), 217-225.
- Doherty, A. J., Jones, S. P., Chauhan, U., & Gibson, J. M. E. (2020). Eating well, living well and weight management: A co-produced semi-qualitative study of barriers and facilitators experienced by adults with intellectual disabilities. Journal of Intellectual Disabilities, 24(2), 158-176.
Included from Medline
- Buell, S., Langdon, P. E., Pounds, G., & Bunning, K. (2020). An open randomized controlled trial of the effects of linguistic simplification and mediation on the comprehension of “easy read” text by people with intellectual disabilities. Journal of Applied Research in Intellectual Disabilities, 33(2), 219-231.
- Kotwal, H., Fleming, J., Barlow‐Stewart, K., Boyle, J., Silberbauer, L., Leffler, M., ... & Palmer, E. E. (2020). Pre‐genetics clinic resource evaluation for adults with intellectual disability: The pre‐genetics clinic aid. Journal of Genetic Counseling, 29(4), 668-677.
- Sawhney, I., Zia, A., Gates, B., Sharma, A., & Adeniji, A. (2023). Clinical letters to patients with intellectual disabilities after psychiatric review: A quality improvement project. Journal of Intellectual Disabilities, 27(1), 278-286.
- Darvell, C., & Bradshaw, J. (2023). Exploring the social care‐related quality of life outcomes of adults with intellectual disabilities through the use of Talking Mats®. Journal of Applied Research in Intellectual Disabilities, 36(1), 39-49.
- Chinn, D. (2020). An empirical examination of the use of Easy Read health information in health consultations involving patients with intellectual disabilities. Journal of Applied Research in Intellectual Disabilities, 33(2), 232-247.
For additional support in creating a detailed and accurate PEO framework for your research, visit Grammarholic Research Builder.
Delving Deeper into PEO: Conducting Comprehensive Searches
Having a PEO framework is one thing, but putting it into action requires a strategic approach to searching for literature. It's about more than finding articles; it's about finding the right articles. This means setting clear inclusion and exclusion criteria that align with your PEO elements and applying these to database searches within fields relevant to learning disability nursing. You're not just looking for information; you're looking for evidence that will underpin your research and potentially influence practice within the NHS.
Analysing and Synthesising Your Findings
Once you've gathered your research, it’s time for analysis. This is where you'll bring together all the evidence, weighing up the effectiveness of different communication strategies and how they impact health inequality. It’s about looking for patterns, contradictions, and gaps in the research, always linking back to the Population, Exposure, and Outcome you defined.
Bringing It All Together
The endgame of your PEO-driven research is to reach conclusions that can inform practice, influence policy, or pave the way for further study. It’s about adding a piece to the puzzle of how we understand and improve healthcare for people with learning disabilities. Your research, grounded in the PEO framework, could be a beacon for others in the field.
The PEO framework isn't just an academic exercise; it's a lens through which to view your research, ensuring it has direction, clarity, and impact. In Learning Disability Nursing, where communication and understanding are so vital, the PEO framework helps ensure that your work really speaks to those who need it most.
Use the references and search record to learn how evidence is handled. Verify every source for your own topic and do not submit model wording as your own work.
Plan your own question before you write
Keep the blog guide as the explanation, then use the app to search resources, shape your question and choose the right support route.
Need help turning your plan into a clear academic structure?
Grammarholic can support planning, structure, editing, model answers and study resources. Your final work must remain honest, properly referenced and written for your own learning rather than direct submission of somebody else's work.