The Cochrane Library is a quarterly electronic journal comprising a collection of evidence-based medicine databases. The Cochrane Library is available by subsciption, although abstracts of the Cochrane reviews and consumer synopses are available for free through the Cochrane Collaboration website. Various databases are available through The Cochrane Library although the exact content varies depending on an individual's or library's subscription.

• The Cochrane Database of Systematic Reviews is the main component of The Cochrane Library and it includes protocols and reviews prepared and updated by the Cochrane Collaboration review groups.
• The Cochrane Database of Methodology Reviews comprises systematic reviews of methodological research on the science of research synthesis and related topics, prepared by members of the Cochrane Collaboration's Methodology Review Group.
• The Cochrane Central Register of Controlled Trials (CENTRAL) is a bibliographic database of over 350,000 controlled trials (as of January 31, 2003).
• The Cochrane Methodology Register is a bibliography of research and other articles on the science of research synthesis an related topics.
• The Database of Abstracts of Reviews of Effects (DARE) includes structured abstracts of systematic reviews which have been critically appraised by reviewers at the NHS Centre for Reviews and Dissemination in York and by other people, e.g. from the American College of Physicians' Journal Club and the journal Evidence-Based Medicine.

Also included in The Cochrane Library is a Reviewers' Handbook on the science of reviewing research; a Glossary of methodological terms and Cochrane jargon; and contact details for review groups and other groupings in the Cochrane Collaboration.

Wiley Interscience offers a variety of training courses on how to use The Cochrane Library including several online training modules.

Additional information on accessing The Cochrane Library
is available through Wiley Interscience.