Results of assessment risk of bias
| Author | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants, personnel, and outcome assessment (performance and detection bias) | Incomplete outcome data addressed (attrition bias) | Selective reporting (reporting bias) | Other bias (cluster effect) |
|---|---|---|---|---|---|---|
| (12) | Low risk | High risk | Low risk | Low risk | High risk | High risk |
| (13) | Low risk | High risk | High risk | Low risk | High risk | Low risk |
| (14) | Low risk | High risk | Low risk | Low risk | High risk | Low risk |
| (15) | Low risk | High risk | High risk | Low risk | High risk | Low risk |
| (16) | High risk | High risk | High risk | High risk | Low risk | Low risk |
| (17) | High risk | High risk | High risk | High risk | High risk | High risk |
| Author | Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants, personnel, and outcome assessment (performance and detection bias) | Incomplete outcome data addressed (attrition bias) | Selective reporting (reporting bias) | Other bias (cluster effect) |
|---|---|---|---|---|---|---|
| (12) | Low risk | High risk | Low risk | Low risk | High risk | High risk |
| (13) | Low risk | High risk | High risk | Low risk | High risk | Low risk |
| (14) | Low risk | High risk | Low risk | Low risk | High risk | Low risk |
| (15) | Low risk | High risk | High risk | Low risk | High risk | Low risk |
| (16) | High risk | High risk | High risk | High risk | Low risk | Low risk |
| (17) | High risk | High risk | High risk | High risk | High risk | High risk |
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