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You may have to experiment to see which option gives you the best results. Some limits will be more effective than others depending on your main subject.
Keep in mind that you most likely will have to use multiple articles to answer each aspect of your PICO. It would be rare to find each aspect of your PICO in a single article.
Limit Options for PICO
There are multiple limits in advanced search that can help with population:
Special Interest Limits
Options here might help with any of PICO. Here are a few of the options available:
Pain and Pain Management
Try the Clinical Queries limit
Therapy and prognosis may help with intervention and outcome
Therapy - High Sensitivity (broader)
Therapy - High Specificity (narrower)
Therapy - Best Balanced (balanced between sensitivity and specificity)
Prognosis - High Sensitivity (broader)
Prognosis - High Specificity (narrower)
Prognosis - Best Balanced (balanced between sensitivity and specificity)
Go to CINAHL
CINAHL UltimateCINAHL is is the definitive research tool for nursing & allied health journals, with full-text articles. Nursing students, please note that resources older than five years can only be used for the purpose of historical context.