Table 2.
Risk of bias assessment for the studies included in the meta-analysis.
| Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data | Selective reporting | |
|---|---|---|---|---|---|---|
| Turk et al. (2006)15 | Low | Low | Low | Low | Low | Low |
| Oropeza-Ceja et al. (2018)16 | Low | Low | Unclear | Unclear | Low | Low |
| Putet et al. (2016)17 | Low | Low | Low | Low | Low | Low |
| Fledderman et al. (2014)18 | Unclear | Low | Low | Low | Low | Low |
| Liotto et al. (2018)19 | Low | Low | Unclear | Unclear | Low | Low |