Table 3.
Study | 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 results |
---|---|---|---|---|---|---|---|
| |||||||
Angus et al24 | Critical | Serious | Serious | Serious | Serious | Moderate | Moderate |
Deprez et al36 | Critical | Serious | Low | No information | Moderate | Moderate | Low |
Foster et al25 | Critical | Serious | Serious | Serious | Serious | Moderate | Moderate |
Graves et al26 | Critical | Low | Low | Serious | Low | Moderate | Moderate |
Harris et al34 | Critical | Serious | Low | Moderate | Moderate | Moderate | Moderate |
Hopkinson et al27 | Critical | Serious | Low | Serious | Low | Moderate | Moderate |
Hull et al28 | Critical | Moderate | Serious | Moderate | Low | Moderate | Moderate |
Lange et al30 | Critical | Serious | Low | Moderate | Moderate | Moderate | Moderate |
Lange et al31 | Critical | Serious | Low | Moderate | Moderate | Moderate | Moderate |
Roberts et al29 | Critical | Serious | Low | Moderate | Moderate | Moderate | Moderate |
Tøttenborg et al32 | Critical | Low | Low | Moderate | Moderate | Moderate | Moderate |
Ulrik et al33 | Critical | Serious | Low | Moderate | Moderate | Moderate | Moderate |