Table S2.

Methodological quality of randomised controlled trial

Studies	Criteria
	1*	2*	3*	4*	5*	6*	7*	8*	9*	10*	11*	12*	13*	Overall
Mohammadzadeh et al. (29)	Y	Y	Y	Y	N	N	Y	Y	Y	Y	Y	Y	Y	11/13 85%
Lee et al. (38)	Y	Y	Y	U	N	U	Y	U	N	Y	Y	Y	N	8/13 62%
Jamali et al. (39)	Y	N	Y	U	U	U	Y	Y	Y	Y	Y	Y	Y	9/13 69%
Total	3/3 100%	2/3 66%	3/3 100%	1/3 33%	0/3 0%	0/3 0%	3/3 100%	2/3 66%	2/3 66%	3/3 100%	3/3 100%	3/3 100%	2/3 66%

Notes: JBI methodological quality appraisal checklist to be scored as: Yes = Y; No = N; Unclear = U; Not applicable = NA;

1* Was true randomisation used for assignment of participants to treatment groups?

2* Was allocation to treatment groups concealed?

3* Were treatment groups similar at the baseline?

4* Were participants blind to treatment assignment?

5* Were those delivering treatment blind to treatment assignment?

6* Were outcomes assessors blind to treatment assignment?

7* Were treatment groups treated identically other than the intervention of interest?

8* Was follow up complete and if not, were differences between groups in terms of their follow up adequately described and analysed?

9* Were participants analysed in the groups to which they were randomised?

10* Were outcomes measured in the same way for treatment groups?

11* Were outcomes measured in a reliable way?

12* Was appropriate statistical analysis used?

13* Was the trial design appropriate, and any deviations from the standard RCT design (individual randomisation, parallel groups) accounted for in the conduct and analysis of the trial?