What tool was used to assess individual study limitations in intervention reviews?
The Cochrane Risk of Bias tool was used to assess individual study limitations in intervention reviews based on the following items: Was there adequate sequence generation (selection bias)? Was allocation adequately concealed (selection bias)? Was knowledge of the allocated interventions adequately prevented during the study (detection bias)? Participants and personnel (performance bias)? Outcome assessors (detection bias)? Were incomplete outcome data adequately addressed (attrition bias)? Are reports of the study free of suggestion of selective outcome reporting (reporting bias)? Was the study apparently free of other problems that could put it at risk of bias?