High risk | Low risk | Unclear risk | |
---|---|---|---|
1. Was the intervention independent of other changes? | □ | □ | □ |
2. Was the shape of the intervention effect pre-specified? | □ | □ | □ |
3. Was the intervention unlikely to affect data collection? | □ | □ | □ |
4. Was knowledge of the allocated interventions adequately prevented during the study? | □ | □ | □ |
5. Were incomplete outcome data adequately addressed? | □ | □ | □ |
6. Was the study free from selective outcome reporting? | □ | □ | □ |
7. Was the study free from other risks of bias? | □ | □ | □ |