Cochrane (organisation)
The Cochrane Collaboration is a British international charitable organisation formed to synthesise medical research findings to facilitate evidence-based choices about health interventions involving health professionals, patients and policy makers.[4][5]
It includes 53 review groups that are based at research institutions worldwide. Cochrane has approximately 30,000 volunteer experts from around the world.[6]
The group conducts systematic reviews of health-care interventions and diagnostic tests and publishes them in the Cochrane Library.[7][4]
According to the Library, articles are available via one-click access, but some require paid subscription or registration before reading.[8][9]
A few reviews, in occupational health for example, incorporate results from non-randomised observational studies[7] as well as controlled before–after (CBA) studies and interrupted time-series studies.[10]