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The Pain, Palliative and Supportive care group is one of 50 collaborative review groups that make up the Cochrane Collaboration, an international organization with the task of preparing, maintaining and disseminating systematic reviews of the effects of healthcare. Cochrane reviews are published cumulatively four times a year on the Cochrane library (CD-ROM and Web-based), along with other useful material such as a register of some 300,000 randomized controlled trials. The group has identified some 20,000 randomized trials in pain and 1,200 in palliative care. Reviews in progress are also published on the library as protocols. Full peer-review is undertaken for protocols and reviews. The Pain, Palliative and Supportive care group is an informal international team involving some 100 people from some 18 countries. The group has published 26 protocols and 17 full reviews with a further 50 reviews in progress. The task is huge and there is scope for further volunteers to help with the various tasks of writing reviews, peer reviewing and literature searching.
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Wiffen et al. (2002) studied this question.
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