Table 1 Cochrane risk-of-bias assessment for included studies (RoB 2)
Authors/Year | Bias arising from the randomization process | Effect of assignment to intervention | Effect of adhering to intervention | Bias due to missing outcome data | Bias in measurement of outcomes | Bias in the selection of the reported result | Overall risk of bias |
|---|---|---|---|---|---|---|---|
Abu Elyazed et al. [26] 2019 | Low | Low | Low | Low | Low | Low | Low |
Aksu et al. [27] 2019 | Low | Some concerns | Low | Low | Low | Low | Some concerns |
Ciftci et al. [28] 2018 | Low | Some concerns | Low | Low | Some concerns | Low | High |
Gurkan et al. [29] 2018 | Low | Some concerns | Low | Low | Low | Low | Some concerns |
Hamed et al. [30] 2019 | Low | Low | Low | Low | Low | Low | Low |
Krishna et al. [31] 2019 | Low | Low | Low | Low | Low | Low | Low |
Oksuz et al. [32] 2019 | Low | Some concerns | Low | Low | Low | Low | Some concerns |
Singh et al. [33] 2019 | Low | Some concerns | Low | Low | Some concerns | Low | High |
Singh et al. [34] 2019 | Low | Some concerns | Low | Low | Low | Low | Some concerns |
Tulgar et al. [35] 2018 | Low | Low | Low | Low | Low | Low | Low |
Tulgar et al. [36] 2018 | Low | Low | Low | Low | Low | Low | Low |
Tulgar et al. [37] 2019 | Low | Low | Low | Low | Low | Low | Low |
Yayik et al. [38] 2019 | Some concerns | Some concerns | Low | Low | Low | Low | High |