Risk of bias judgement | Pre-intervention | At-intervention | Post-intervention | Overall bias | ||||
---|---|---|---|---|---|---|---|---|
Bias due to confounding | Bias in selection of participants into the study | Bias in measurement of interventions | Bias due to departures from intended interventions | Bias due to missing data | Bias in measurement of outcomes | Bias in selection of the reported result | ||
Low | - | - | 6 | 8 | 8 | 1 | - | - |
Moderate | - | 7 | 4 | 3 | 4 | - | - | - |
Serious | 14 | 7 | 5 | 4 | 2 | 11 | 15 | 3 |
Critical | 1 | 1 | - | - | - | 3 | - | 12 |
No information | - | - | - | - | 1 | - | - | - |