Randomised controlled trial (RCT) quality assessment according to the Cochrane Collaboration's risk of bias tool
| RCT 1 | RCT 2 | RCT 3 | RCT 4 | RCT 5 | … | |
|---|---|---|---|---|---|---|
| Random sequence generation | ||||||
| Allocation concealment | ||||||
| Blinding of participants and personnel | ||||||
| Blinding of outcome assessment | ||||||
| Incomplete outcome data | ||||||
| Selective reporting | ||||||
| Other sources of bias |
Each item of included RCT will be evaluated at low risk, unclear risk and high risk of bias, based on the Cochrane Collaboration's risk of bias tool.13