From: Risk of bias assessment of sequence generation: a study of 100 systematic reviews of trials
Rated any randomised trials as high/unclear ROB for sequence generation | Downgraded for study limitations (additional reasons not specified) | Downgraded for study limitations (selection bias) | Sensitivity analysis based on ROB (conducted) | Sensitivity analysis based on ROB (planned; not able to conduct) |
---|---|---|---|---|
Cochrane reviews (n = 57)a | 23 (40.4%) | 7 (12.3%) | 17 (29.8%) | 22 (38.6%) |