Additional Table 1.

Risk of bias assessment according to Physiotherapy Evidence Database scale

Study	Eligibility criteria specified (0/1)	Random allocation (0/1)	Concealed allocation (0/1)	Comparable at baseline (0/1)	Blinded subjects (0/1)	Blinded therapists (0/1)	Blinded assessors (0/1)	Adequate follow-up (0/1)	Intention-totreat analysis (0/1)	Between group comparisons (0/1)	Point estimates and variability (0/1)	Summary
Cha et al. (2014)	1	1	1	1	0	0	0	1	1	1	1	8
Cha and Kim (2015)	1	1	0	1	0	0	0	1	1	1	1	7
Cha and Kim (2017)	1	1	1	1	0	1	1	1	1	1	1	10
Chang et al. (2010)	1	1	0	1	1	0	1	1	1	1	1	9
Chen (2018)	1	1	0	1	1	0	0	1	0	1	1	7
Chieffo et al. (2014)	1	1	0	1	0	0	0	1	0	1	1	6
Choi et al. (2016)	1	1	0	1	0	0	0	1	1	1	1	7
Du et al. (2016)	1	1	1	1	1	1	1	1	1	1	1	11
Elkholy et al. (2014)	1	0	0	1	0	0	0	1	1	1	1	6
Forogh et al. (2017)	1	1	0	0	1	0	0	1	1	1	1	7
Guan et al. (2017)	1	1	1	1	1	1	1	1	1	1	1	11
Huang et al. (2018)	1	1	0	1	1	0	1	1	0	1	1	8
Ji et al.(2014)	1	1	0	1	0	0	0	1	1	1	1	7
Ji and Kim (2015)	1	1	0	1	0	0	0	1	1	1	1	7
Kakuda et al. (2013)	1	1	0	1	0	1	1	1	1	1	1	9
Kim et al. (2014b)	1	1	0	1	1	1	1	1	1	1	1	10
Koch et al. (2019)	1	1	0	1	1	0	1	1	0	1	1	8
Lin et al.(2015)	1	0	0	1	1	1	0	1	0	1	1	7
Lin et al. (2019)	1	1	1	1	1	1	1	1	1	1	1	11
Liu et al. (2019)	1	1	0	1	0	0	0	1	1	1	1	8
Meng and Song (2017)	1	1	0	1	1	0	0	1	1	1	1	7
Rastgoo et al. (2016)	1	1	0	1	0	1	1	1	1	1	1	9
Wang et al. (2012)	1	1	1	1	1	0	1	1	0	1	1	9
Wang et al. (2016)	1	0	0	1	0	0	0	1	1	1	1	6
Wang et al.(2019)	1	1	1	1	1	0	1	1	1	1	1	10
Zhao et al. (2018)	1	1	0	1	0	0	0	1	1	1	1	7

0 indicates the criterion was not satisfied; 1 the criterion was satisfied.