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Search here to find systematic reviews that will give you reliable and up-to-date information on the effects of interventions in health care.
Provides real-time access to step-by-step nursing procedures and skills in a variety of specialty settings.
Trip Medical Database
Search here to find a variety of evidence, which you can filter by evidence category.
ECRI Guidelines Trust
Register for free to access clinical practice guideline summaries (replaced the National Guideline Clearinghouse).
Many sources provide evidence to support a conclusion, but some evidence is better than others. Check out the links below to learn about levels of evidence.
Writing a PICOT question will help focus your search for evidence-based sources.
I-Intervention or Issue of interest
C-Comparison intervention or group
Strong PICOT question: In teenagers, how does cognitive-behavioral skills building compared to yoga affect anxiety after 6 weeks of treatment?
Poorly designed question: What is the best type of intervention to use with teenagers who are anxious?
(Examples from Evidence-based Practice in Nursing & Healthcare: A Guide to Best Practice, 2nd ed., by Melnyk and Fineout-Overholt.)