PICO is an acronym to assist in remembering the key components of a clinical question.
Additional letters may be added for Timeframe, Type of study, Setting (PICOT, PICOS, PICOTS, PICOTTS)
Searching Tip: Start looking for articles once your PICO question is approved, because you will need many references to write about before your Annotated Bibliography is due. Use LibSearch or one of the Databases in this guide to start.
If you are not finding much using the PICO searches, only use the P & I parts of your question, which usually work better when you are beginning your research. Checking for a recent systematic review in CINAHL or the Cochrane Library (below) is also a good way to see an overview of the research so far, and identify if there are gaps in the literature where new studies are needed.
Searching for a Systematic Review or Meta-analysis in the CINAHL Nursing database:
Cochrane is adding PICO details to new reviews, and is beta-testing a PICO search tab on Advanced search.
Example PICOT questions
Downloads a worksheet from Sonoma State University, which includes examples