Table 4:

Methodological Quality Appraisal Results

No.	Item Description	Lee et al.9	Soylu et al.10	Fu et al.11	Chang et al.12	Vithoulka et al.13	Slupik et al.14	Aktas et al.15	Yoshida et al.16	Huang et al.17	Lee et al.18
1	Randomized	1	1	2	2	2	1	1	2	1	2
2	Baseline Characteristics	2	2	2	2	2	1	2	2	2	2
3	Prognostic Stratification	1	1	1	1	1	1	1	1	1	2
4	Blinding	1	1	1	1	1	1	1	1	2	1
5	Method Protocol	2	2	2	2	2	2	2	2	2	2
6	Compliance	2	2	2	2	2	2	2	2	2	2
7	Follow-up	1	1	1	1	1	1	1	1	1	1
8	Sources of Error	2	2	2	2	1	1	2	2	1	1
9	Statistical Significance	2	1	2	2	2	2	2	2	2	1
10	Clinical Significance	2	2	2	2	2	2	2	2	2	2
	Total Score	16/20	15/20	17/20	17/20	16/20	14/20	16/20	17/20	16/20	16/20