Table 2.

Risk of bias assessment (Physiotherapy Evidence Database scale).

	Eligibility criteria	Random allocation	Concealed allocation	Baseline comparability	Subjects blinding	Therapist blinding	Assessor blinding	Adequate follow-up	Intention-to-treat analysis	Points estimates and measures of variability provided	Total PEDro score
Li et al. (2017)	+			+				+	+	+	5/10
Wu et al. (2017)	+	+	+	+				+	+	+	7/10
Liu et al. (2020), Liu et al. (2021)	+	+		+					+	+	4/10
Zhan et al. (2023)	+	+	+	+			+	+	+	+	8/10
Sun et al. (2013)	+	+		+			+	+	+	+	7/10
Liu et al. (2014)	+			+			+	+	+	+	6/10
Wang et al. (2019), Wang et al. (2020)	+	+		+			+	+	+	+	7/10
Wang et al. (2023)	+	+	+	+		+	+		+	+	8/10
Sihvonen et al. (2020), Sihvonen et al. (2021a), Sihvonen et al. (2021b)	+	+	+	+			+		+	+	7/10
Wang et al. (2017)	+	+		+				+	+	+	6/10
Mekbib et al. (2021)	+	+		+			+	+		+	6/10
Wu et al. (2022)	+			+				+	+	+	5/10