Table 1 Risk of bias and number of participants for the included trials
From: Tolerating bad health research: the continuing scandal
High | Unclear | Low | No RoB | |
|---|---|---|---|---|
Number of trials (total = 1659; % based on 1640 trials with risk of bias information) | 1013 (62%) | 494 (30%) | 133 (8%) | 19 |
Number of participants (total = 398,410) | 222,850 (55.93%) | 127,290 (31.95%) | 47,138 (11.83%) | 1132 (0.28%) |