Table 3.

Jadad quality assessment of the studies included in the present systematic review

References	Domain					Score
	Random sequence generation	Appropriate randomization	Blinding of participants or personnel	Blinding of outcome assessors	Withdrawals and dropouts
Chau et al. [35]	1	1	0	0	1	3
Jiang et al. [36]	1	1	0	1	1	4
Kawagoshi et al. [37]	1	1	0	0	1	3
Pedone et al. [38]	1	1	0	0	1	3
Walker et al. [39]	1	1	0	0	1	3

Points were awarded as follows: study described as randomized, 1 point; appropriate randomization, 1 point; subjects blinded to

intervention, 1 point; evaluator blinded to intervention, 1 point; description of withdrawals and dropouts, 1 point