Table 2.

Risk of bias and quality assessment of RCT.

Item	Yes/no/unclear/not applicable
	Alcântara-Silva et al. (2018)	Lee et al. (2012)
1. Was true randomization used for the assignment of participants to treatment groups?	Unclear	Yes
2. Was allocation to treatment groups concealed?	Yes	Unclear
3. Were treatment groups similar at the baseline?	Yes	Yes
4. Were participants blind to treatment assignment?	No	No
5. Were those delivering treatment blind to treatment assignment?	No	No
6. Were outcomes assessors blind to treatment assignment?	Yes	Yes
7. Were treatment groups treated identically other than the intervention of interest?	Unclear	Unclear
8. Was follow-up complete and if not, were differences between groups in terms of their follow-up adequately described and analyzed?	Unclear	Unclear
9. Were participants analyzed in the groups to which they were randomized?	Unclear	Unclear
10. Were outcomes measured in the same way for treatment groups?	Yes	Yes
11. Were outcomes measured in a reliable way?	Yes	Yes
12. Was an appropriate statistical analysis used?	Yes	Yes
13. Was the trial design appropriate, and any deviations from the standard RCT design (individual randomization, parallel groups) accounted for in the conduct and analysis of the trial?	Unclear	Unclear