| 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 |