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The PICO process is a mnemonic used in evidence-based practice and specifically evidence-based medicine, to frame and answer a clinical or health care related question. The PICO framework is also used to develop literature search strategies in systematic reviews.
What is a PICOT Search?
P – Population, problem or patient: Identify the patient problem or population. Describe either the patient's chief complaint or generalize the patient's comparison to a larger population.
I - Intervention: Include the use of a specific diagnostic test, treatment, adjunctive therapy, medication or recommendation to the patient to use a product or procedure.
C - Comparison: The main alternative you are considering. It should be specific and limited to one alternative.
O – Outcome: Specify the result(s) of what you plan to accomplish, improve or affect and should be measurable. Specific outcomes will yield better search results and allow you to find the studies that focus on the outcomes you are searching for.
T – Time: Specify the time frame needed to achieve the Outcome.
Example of a PICOT Search Strategy
Example Question and Description
I am looking for articles representing evidence about what can be done to prevent falls in the elderly. In particular, I would like to know what evidence is available about the prevention of falls in elderly. I am particularly interested in the use of fall risk assessment to prevent falls in the elderly.
- What is the population? Older adults, in the hospital or long-term care facilities
- What is the intervention? Falls risk assessment
- What is the Comparison? In this case, there is no comparison intervention or standard of care.
- What is Outcome? Prevention of falls
- What is the time it takes to meet the outcome of the intervention? In this case, time is not measured.
Possible Keywords for Database Searching
- (elderly or aged or older adults)
- (falls risk assessment or fall risk assessment)
- (nursing or nursing assessment)
Other Tips
- Look for limiters relevant to a part of your PICO question. Some databases have limiters for age and gender.
- Your intervention is the most important part of your question as a subject for searching.
- Make sure you know the kind of article you need. Use limiters like "peer reviewed" or "research article" or for a specific type, like "systematic review."
Health Sciences Research Hub
Visit the Health Sciences Research Hub in The Learning Portal to learn how to find and use evidence-based health sciences information.
What Databases Use PICOT?
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CINAHL (EBSCO)
Health research database. Indexes the top nursing and allied health literature available including nursing journals and publications from the National League for Nursing and the American Nurses Association. Includes Medical Subject headings (MeSH).
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Cochrane Database of Systematic Reviews
A collection of databases in medicine and other healthcare specialties. Contains systematic reviews and meta-analyses which summarize and interpret the results of medical research. Includes full-text journals, editorials and supplements.
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Evidence Based Medicine Reviews (OVID)
Health research database. Contains a collection of evidence-based medicine resources that provide reliable information on the effects of interventions in health care. Includes reviews from the American College of Physicians. Note: Limited to 12 concurrent users.
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Ovid MEDLINE
Premier biomedical database. Covers audiology, nutrition, medicine, nursing, occupational & physical therapy, psychiatry & psychology. Includes citations and abstracts from more than 4,600 biomedical journals published in 70 countries.
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PubMed
Health database containing over 23 million citations for bio medical literature from MEDLINE, life sciences journals and eBooks.