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Risk of bias for included RCTS via Cochrane Collaboration's Risk of Bias tool version 2
| Study | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants and personnel (performance bias) | Blinding of outcome assessment (detection bias) | Incomplete outcome data (attrition bias) | Selective reporting (reporting bias) | Other Bias |
|---|---|---|---|---|---|---|---|
| Paz et al. (2006) | Low | Low | Low | Low | Low | Low | Low |
| Garvey et al. (2005) | Low | Unclear | Unclear | Unclear | Unclear | Low | Low |
