Cochrane LibraryFocusing on high quality evidence to support health care providers in their clinical decision making, the Cochrane Library includes 6 databases which may be searched as a group or individually. The primary resource, the Cochrane Database of Systematic Reviews, includes more than 4,650 reviews and 2,015 protocols which have been prepared by a highly credentialed group to determine if an intervention for a specific disease or other problem is effective. The reviews include a summary of research results from random controlled trials, the group's meta-analysis, links to references, and MeSH (Medical Subject Headings) indexing, The other databases include Database of Abstracts of Reviews of Effects, a database of quality assessments and review summaries not conducted by Cochrane, Cochrane Central Register of Controlled Trials,
Cochrane Central Register of Controlled Trials, the world's largest directory of random controlled trials with journal article citations in the entries, Cochrane Methodology Register, a bibliography of books and journal articles where researchers have reported on the methods used in random clinical trials, Health Technology Assessment Database, a collection of assessment studies of medical, social, ethical, and economic implications of healthcare interventions, and theNHS Economic Evaluation Database, which identifies information about cost-effectiveness of interventions.