Risk of bias assessment based on the Cochrane risk of bias tool
| Study | Random sequence generation | Allocation concealment | Blinding of participants | Blinding of outcome assessment | Incomplete outcome data | Missing data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|---|---|
| Author et al year | High risk or low risk or unclear | Idem | Idem | Idem | Idem | idem | ||