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Proportion of studies in categories of potential risk of bias
| Random sequence generation | |||||||||||||||||
| Allocation concealment | |||||||||||||||||
| Blinding of participants and personnel | |||||||||||||||||
| Blinding of outcome assessment | |||||||||||||||||
| Incomplete outcome data | |||||||||||||||||
| Selective reporting |
Note: Green = low risk of bias, yellow = some concern, red = High risk of bias.
