Evaluation of the Cochrane Collaboration’s tool for assessing the risk of bias in randomized trials: focus groups, online survey, proposed recommendations and their implementation

Jelena Savović1, Laura Weeks2, Jonathan A C Sterne1, Lucy Turner3, Douglas G. Altman4, David Moher3, Julian P T Higgins5
1School of Social and Community Medicine, University of Bristol, Bristol, UK
2Ottawa Integrative Cancer Centre, Ottawa, ON, Canada
3Ottawa Hospital Research Institute, Ottawa, ON, Canada
4Centre for Statistics in Medicine, University of Oxford, Oxford, UK
5Centre for Reviews and Dissemination, University of York, York, UK

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