Table 2 Methodological quality assessment of the included trials
Authors (year) | Bias from randomization process | Deviations from intended interventions | Bias caused by missing outcome data | Bias in outcome measurement | Bias in selection of reported results | Overall risk of bias |
|---|---|---|---|---|---|---|
Riccio et al. (2019) | Low risk | Some concerns | Low risk | Low risk | Low risk | Some concerns |
Ben-Menachem et al. (2020) | Low risk | Some concerns | Low risk | Low risk | Low risk | Some concerns |
Douglas et al. (2018) | Low risk | Some concerns | Low risk | Low risk | Low risk | Some concerns |
Lin et al. (2019) | Low risk | Low risk | Low risk | Low risk | Low risk | Low risk |
Teng et al. (2019) | Some concerns | Low risk | Low risk | Low risk | Low risk | Some concerns |
Sago et al. (2015) | Some concerns | Some sconcerns | Low risk | Low risk | Low risk | Some concerns |