Table 2.

Assessment of quality.

References	Randomization	Allocated	Blinding	Baseline	Loss of follow-up	Selective report results	ITT
Bozzini et al.9	Unclear	No	Unblinded	Comparable	Yes (n=18)	Unclear	Unclear
Bozzini et al.10	Randomized number table	No	Unclear	Comparable	Unclear	Unclear	Unclear
Fayad et al.11	Unclear	No	Unclear	Comparable	Yes (n=14)	Unclear	Unclear
Jiang et al.12	Unclear	No	Unclear	Comparable	Yes (n=3)	Unclear	Unclear
Jin et al.13	Simple random sampling	No	Unblinded	Comparable	Yes (n=0)	Unclear	Yes
Kumar et al.14	Computer generated	No	Unclear	Comparable	Yes (n=23)	Unclear	Unclear
Sener et al.15	Online randomization tool	No	Unclear	Unclear	Yes (n=3)	Unclear	Unclear
Yuruk et al.16	Unclear	No	Unclear	Comparable	Yes (n=9)	Unclear	Unclear
Zhang et al.17	Unclear	No	Unclear	Comparable	Unclear	Unclear	Unclear

ITT, intention to treat.