Use your PICOTS concepts as preliminary search terms. The important terms in this question:
How can screening for depression and feedback of results to providers versus no screening and feedback improve outcomes of major depression in primary care settings for adult populations?
Adults
Screening
Feedback
Outcomes
Major depression
Primary Care
(From Lackey, M. (2013). Systematic reviews: Searching the literature [PowerPoint slides]. Retrieved from http://guides.lib.unc.edu/ld.php?content_id=258919)