Table 3 Risk of bias of included nRCTs
Study | Domains | ||||||
|---|---|---|---|---|---|---|---|
Bias due to confounding | Bias in selection of participants | 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 | |
Desplenter et al., 2013 [27] | Moderate | Low | Low | Low | NI | Moderate | Moderate |
Gervasoni et al., 2010 [28] | Serious | Low | Moderate | Low | NI | Low | Low |
Myers and Calvert, 1976 [47] | NI | NI | Low | Low | Moderate | Moderate | Moderate |
Klang et al., 2015 [39] | Moderate | NI | Low | Low | Moderate | Moderate | Moderate |
Meglic et al., 2010 [45] | Moderate | Low | Moderate | Low | Moderate | Moderate | Moderate |