Table 2 Risk of bias
Study ID | Random sequence generation | Allocation concealment | Blinding of participants and personnel | Incomplete outcome data | Selective reporting | Other bias |
|---|---|---|---|---|---|---|
Valeh 2020 [10] | Unclear | Unclear | Unclear | Low | Low | Unclear |
Sternfeld 2013 [11] | Low | Low | Unclear | Low | Low | Low |
Moilanen 2012 [12] | Low | Low | Unclear | low | High | Low |
Mansikkamäki 2021 [14] | Low | Low | Unclear | Low | Low | Unclear |
Asghari2016 [14] | Low | Low | Unclear | Low | Low | Unclear |
DÄ…browska 2016 [15] | Low | High | Unclear | Low | Low | Unclear |
Aibar-Almazan 2019 [16] | Low | High | Low | Low | Low | Unclear |
Kai 2016 [17] | Low | High | Unclear | Low | High | Unclear |
Takahashi 2019 [18] | Unclear | High | High | Low | Low | Unclear |
Hu 2017 [19] | Unclear | High | High | Low | low | unclear |
Bernarda 2014 [20] | Low | High | Low | Low | Low | Low |
Noh 2020 [21] | Unclear | High | Unclear | Low | Low | Unclear |
Tadayon 2016 [22] | Low | Low | Unclear | Low | Unclear | Unclear |
Aghamoham-madi 2020 [23] low | Â | Low | Unclear | Low | Low | Low |
Aydin 2021 [24] | Low | Low | Unclear | Low | Low | High |
Asltoghiri 2011 [25] | Unclear | Unclear | Unclear | High | High | Unclear |
Mahdavipour 2019 [26] | Low | Low | Low | Low | Low | High |
Portella 2020 [27] | Low | High | Unclear | Low | High | High |
Swain 2021 [28] | High | Unclear | Unclear | Low | Low | High |
Afonso 2011 [29] | Unclear | Unclear | Unclear | High | High | High |
Joshi 2010 [30] | Low | Low | Unclear | Low | Low | Unclear |
Xi Lu 2020 [31] | Unclear | Unclear | Unclear | Low | Low | High |
Oliveira 2012 [32] | Unclear | Unclear | Unclear | Low | Low | Unclear |
Darsareh 2012 [33] | Low | Unclear | Unclear | Low | High | Low |
Taavoni 2013 [34] | High | High | High | Low | Low | Low |
Esp´ı-Lopez 2020 [35] | Low | Low | Unclear | Low | Low | Low |
Susanti 2022 [37] | Low | Low | unclear | Low | Low | Low |
Abedian 2015 [38] | Low | Low | Low | Low | Low | Low |
Eman 2017 [39] | Low | Unclear | Unclear | Low | Low | Low |
Lotfipur Rafsanjani 2015 [40] | Unclear | Low | Unclear | Low | Low | Unclear |
Márcia P. Jorge 2016 [41] | High | Low | Low | Low | Low | Low |