Recommendations by Cochrane Review Groups for assessment of the risk of bias in studies.
Lundh Andreas, Gøtzsche Peter C·BMC medical research methodology
BACKGROUND: Assessing the risk of bias in individual studies in a systematic review can be done using individual components or by summarizing the study quality in an overall score. METHODS: We examined the instructions to authors of the 50 Cochrane Review Groups that focus on clinical interventions for recommendations…