| Bias | Authors' judgement | Support for judgement |
|---|---|---|
| Random sequence generation (selection bias) | Unclear risk | Quote: “The girls were randomly allocated to the control and experimental groups.” |
| Comment: Insufficient information to permit judgement | ||
| Allocation concealment (selection bias) | Unclear risk | Quote: “The girls were randomly allocated to the control and experimental groups.” |
| Comment: Insufficient information to permit judgement | ||
| Blinding of participants and personnel (performance bias) | High risk | Comment: Probably not done |
| Blinding of outcome assessment (detection bias) | High risk | Comment: Probably not done |
| Incomplete outcome data (attrition bias) | Low risk | Comment: |
| Group 1: 0/53 loss to follow‐up | ||
| Group 2: 0/53 loss to follow‐up | ||
| Selective reporting (reporting bias) | Unclear risk | Comment: Trial registration not reported. Outcomes specified in the methodology section were reported |
| Other bias | Low risk | Comment: Sample size assumptions were not specified |
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