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Summary of Cochrane Risk of Bias for Randomized Controlled Trials [19] (n = 30)
| Low Risk | High Risk | Unclear | Not Applicable | |
|---|---|---|---|---|
| Random sequence generation | 11 | 4 | 15 | 0 |
| Allocation concealment | 11 | 4 | 15 | 0 |
| Blinding of participants and personnel | 8 | 9 | 13 | 0 |
| Blinding of outcome assessment | 21 | 2 | 7 | 0 |
| Incomplete outcome data (2–6 weeks) | 19 | 5 | 6 | 0 |
| Incomplete outcome data (> 6 weeks) | 7 | 0 | 1 | 22 |
| Selective reporting | 28 | 0 | 2 | 0 |
