| Random sequence generation | Allocation concealment | Blinding participants/ personnel | Blinding outcome assessment | Incomplete outcome data | Selective reporting |
---|---|---|---|---|---|---|
Low | Low | High | Low | High | Low | |
Jewkes 2014 [38] | High | High | High | High | Low | Low |
Jiang 2014 [39] | Low | Unclear | High | High | High | Low |
Low | Low | High | Unclear | Low | Low | |
Low | Low | Low | Low | Low | Low | |
Low | Low | Low | Low | Low | Low | |
Wechsberg 2013 [42] | Low | Unclear | High | High | Low | Low |