Nursing 450: Evidence-Based Practice: Where and How to Search

This database would provide both filtered and unfiltered information. This database does have a "Evidence-based Practice" limiter, which includes, "The Evidence-based practice journal subset is applied to articles from evidence based practice journals (including Cochrane), as well as articles about evidence based practice, research articles (including systematic reviews, clinical trials, meta analyses, qualitative studies), commentaries on research studies (applying practice to research), case studies if they meet the criteria of the use of research and/or evidence based practice terms."

Cochrane provides filtered information, mostly in the form of "Cochrane reviews," or systematic reviews.

PubMed also has both filtered and unfiltered information.