Hierarchy of Evidence Strength
Systematic Review: A review of a clearly formulated question that uses systematic and explicit methods to identify, select, and critically appraise relevant research, and to collect and analyse data from the studies that are included in the review.
from: Cochrane Collaboration (2005) Glossary of Terms in The Cochrane Collaboration
Many consider Cochrane Reviews the "Gold Standard" of systematic reviews.
Cochrane Library: Systematic Reviews and More
“Effective therapy efficiently applied”
Please click on the tabs above for tips and demonstrations on browsing and searching for systematic reviews and on using the other databases in the Cochrane Library.
What is the Cochrane Library?
This short (2:30) presentation provides an overview of the Cochrane Library. Choose the tabs at the top of this page for video demonstrations of searching and using the databases.
The Cochrane Collaboration is an international, independent, not-for-profit organization of over 28,000 contributors from more than 100 countries, dedicated to making up-to-date, accurate information about the effects of health care readily available worldwide.