Table 2.
| Study | Randomization process | Deviations from the intended interventions | Missing outcome data | Measurement of the outcome | Selection of the reported result | |||
|---|---|---|---|---|---|---|---|---|
| Millett (2017)5 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Bojorquez et al. (2020)3 | Some concerns | Low risk | Low risk | Low risk | Low risk | |||
| Twiss et al. (2006)6 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Dóro et al. (2017)7 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Mason et al. (2015)1 | Low risk | Some concerns | Low risk | Low risk | Low risk | |||
| Ghetti (2011)8 | Low risk | Low risk | Low risk | Low risk | Some concerns | |||
| Ciğerci et al. (2011)9 | Low risk | Low risk | High risk | Some concerns | Some concerns | |||
| Dai et al. (2020)10 | Some concerns | Low risk | Low risk | Low risk | Some concerns | |||
| Uggla et. al (2018)11 | Low risk | Low risk | Low risk | Low risk | High risk | |||
| Çelebi et al. (2017)12 | High risk | Some concerns | Low risk | Low risk | Some concerns | |||
| Gogoularadja et al. (2020)13 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Forooghy et al. (2015)14 | Low risk | Low risk | Low risk | Low risk | Some concerns | |||
| Doğan et al. (2012)15 | Low risk | Low risk | Low risk | Some concerns | Some concerns | |||
| Luis et al. (2019)16 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Gokcek et al. (2019)17 | Low risk | Low risk | Low risk | Low risk | Low risk | |||
| Lee et al. (2012)2 | Low risk | Some concerns | Low risk | Low risk | Some concerns | |||