The Cochrane Collaboration is an independent nonprofit organization consisting of a group of over 28,000 volunteers in more than 100 countries. The collaboration was formed to organize medical research information in a systematic way in the interests of evidence-based medicine.
The group conducts systematic reviews of randomized controlled trials of health-care interventions, which it publishes in the Cochrane Library. A few reviews (in fields such as occupational health) have also studied the results of non-randomized, observational studies.
The collaboration formed an official relationship in January 2011 with the World Health Organization as a partner NGO, with a seat on the World Health Assembly to provide input into WHO resolutions.
Read more about Cochrane Collaboration: History, Logo, Reception