References | Bias due to confounding | Bias in selection of participants into the study | Bias in classification of interventions | Bias due to deviations from intended interventions | Bias due to missing data | Bias in measurement of outcomes | Bias in selection of the reported result | Overall Bias |
---|---|---|---|---|---|---|---|---|
Wrighton [5] | Serious | Serious | Low | Low | Low | Moderate | Low | Serious |
Kozlov [6] | Serious | Moderate | Low | Low | Low | Moderate | Low | Serious |
Muncie [7] | Serious | Serious | Low | Low | Low | Moderate | Low | Serious |
Hintz [8] | Serious | Moderate | Low | Low | Low | Moderate | Low | Serious |
Amano [9] | Serious | Moderate | Low | Low | Low | Moderate | Low | Serious |