Table 2. Quality evaluation of included studies.

Included studies	Quality Review score (NOS)	Selection of research subjects				Comparability between groups	Outcome measurement
		Experimental group representativeness	Control group representativeness	Definition of experimental group	Definition of control group		Outcome measures	Follow-up time	Completeness of follow-up
Kurku, 2019	9	Good	Good	Clear	Clear	Good	Low risk	Long	Good
Malecki, 2020	8	Uncertain	Good	Clear	Clear	Good	Low risk	Long	Good
Kwon, 2020	9	Good	Good	Clear	Clear	Good	Low risk	Long	Good
Thompson, 2017	6	Uncertain	Uncertain	Clear	Clear	Uncertain	Low risk	Long	Good
Battal, 2018	6	Good	Good	Clear	Uncertain	Uncertain	Uncertain	Long	Uncertain
Elkabany, 2020	8	Uncertain	Good	Clear	Clear	Good	Low risk	Long	Good
Gupta, 2020	7	Good	Good	Clear	Clear	Good	Uncertain	Long	Uncertain
Hattar, 2011	9	Good	Good	Clear	Clear	Good	Low risk	Long	Good
Hu W, 2017	8	Good	Uncertain	Clear	Clear	Good	Low risk	Long	Good
Liu F, 2022	8	Good	Good	Clear	Clear	Good	Uncertain	Long	Good
Antunes, 2013	4	Uncertain	Uncertain	Uncertain	Clear	Uncertain	Low risk	Uncertain	Good
Grønbæk H, 2012 (10 weeks)	7	Good	Good	Clear	Uncertain	Uncertain	Uncertain	Long	Good
Grønbæk H, 2012 (12 months)	8	Good	Good	Clear	Clear	Good	Low risk	Long	Uncertain
Koot BG, 2011	9	Good	Good	Clear	Clear	Good	Low risk	Long	Good
Verduci, 2013	8	Good	Good	Clear	Clear	Uncertain	Low risk	Long	Good
Nier, 2018	8	Good	Good	Clear	Clear	Uncertain	Low risk	Long	Good

NOS, Newcastle-Ottawa Scale