Table 3.
Modified Cochrane Collaboration tool to assess risk of bias for randomized controlled trials
| Study | Selection bias | Reporting bias | Other bias | Performance bias | Detection bias | Attrition bias | |
|---|---|---|---|---|---|---|---|
| Random-sequence generation | Allocation concealment | Selective reporting | Blinding (participants and personnel) | Blinding (outcome assessment) | Incomplete outcome data | ||
| Gajjar et al, 2000 16 | Low | Low | Low | Low | Low | Low | Low |
| Jawahar et al, 2013 19 | Low | High | Low | Low | Low | Low | Low |
| Merle et al, 2014 22 | Low | High | Low | Low | High | Low | High |