Table 3.
Quality assessment of RCTs included by the Cochrane Collaboration tool
| Study, year | Selection bias | Performance bias | Detection bias | Attrition bias | Reporting bias | |
|---|---|---|---|---|---|---|
| Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data assessments | Selective reporting. | |
| Pisani 2015 [15] | Low | Low | High | Low | Low | Low |
| Brambilla 2014 [16] | Low | Low | High | Low | Low | Low |
| Ali 2011 [29] | Unclear | Unclear | High | High | Low | Low |
| Özlem 2015 [30] | Unclear | Unclear | High | High | Low | Low |
| Antonaglia 2011 [31] | Low | Low | High | High | Unclear | Low |
| Patel 2016 [32] | Low | Low | High | Low | Low | Low |
Low low risk of bias, High high risk of bias, Unclear unclear risk of bias according to the relative information