Table 2. Risk of bias assessment with PEDro scale.

Author (Year)	Eligibility	Random allocation	Concealed allocation	Baseline comparability	Blinding subjects	Blinding therapist	Blinding assessors	Adequate follow-up	Intention-to-treat analysis	Between-group statistical comparison	Point measures and measures of variability	Score
Ben-Pazi et al. (2018)	Yes	Yes	No	Yes	Yes	No	Yes	No	Yes	Yes	No	6
Jeba & Joshi (2016)	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes	Yes	7
Kvam (1997)	No	Yes	No	No	No	No	Yes	Yes	No	Yes	No	4
Puggina & Da Silva (2015)	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	No	Yes	Yes	8
Scartelli (1982)	No	Yes	No	No	No	No	No	Yes	Yes	No	No	3
Wong, Mak & Mok (2018)	Yes	Yes	Yes	Yes	Yes	No	No	No	No	Yes	No	5