TableĀ 5

Risk of bias of randomised controlled trials based on review primary and secondary outcomes

Risk of bias based on review primary outcomes only
High risk excluding GHigh risk (based on G classifications only)Low riskTotal
Risk of bias based on review primary and secondary outcomesHigh risk excluding G1331329 (45%)
High risk (based on G classifications only)0131831 (49%)
Low risk0044 (6%)
Total13 (20%)16 (25%)35 (55%)64