Table 3.
Risk of Bias Assessment of RCTs
| Study | Random sequence generation (Selection Bias) | Allocation concealment (Selection Bias) | Blinding of participants-personnel Bias | Blinding of outcome assessment Bias | Incomplete outcome data (Attrition Bias) | Selective reporting Bias | Other bias | Overall Risk of Bias |
|---|---|---|---|---|---|---|---|---|
| Fortier 2019 | Low | ? | ? | ? | High | Low | Low | High |
| Ota part A 2019 | ? | ? | ? | ? | ? | Low | Low | ? |
| Chan 2017 | Low | Low | High | ? | High | Low | Low | High |
| Yang 2015 | ? | ? | ? | ? | ? | Low | Low | ? |
| Rebello 2015 | Low | Low | Low | Low | Low | Low | Low | Low |
| Henderson 2009 | High | High | Low | ? | High | Low | ? | High |
| Reger 2006 | ? | ? | ? | ? | ? | Low | Low | ? |
Low, Low Risk of Bias; ?, Unknown Risk of Bias; High, High Risk of Bias; Risk of Bias was assessed with the Cochrane Tool for Risk of Bias