Cochrane Effective Practice and Organization of Care risk of bias | randomized controlled trials
| Study | Random sequence generation | Allocation concealment | Similar baseline outcome measures | Similar baseline characteristics | Incomplete outcome data | Blinding of outcome assessor | Contamination | Selective outcome reporting | Other bias |
| Moore et al61 | Low | Low | Low | Low | Low | High | Low | Low | Low |
| Sperry et al46 | Low | High | Low | Low | Low | Unclear | Low | Low | Low |
| Mahshidfar et al67 | Low | Unclear | Unclear | Low | Unclear | Unclear | Low | Low | Low |
| Lundgren et al63 | Low | Low | Low | Low | Low | Unclear | Low | Low | Low |
| Cassidy et al62 | High | High | Unclear | High | Unclear | High | Low | Unclear | Unclear |