Q1	Q2	Q3	Q4	Q5	Q6	Q7	Q8	Q9	Total score
Johnson 2003	Y	Y	N	N	Y	Y	Y	Y	Y	7
Rawtaer 2018	Y	Y	Y	N	Y	U	Y	Y	Y	7
Ziv 2008	Y	Y	Y	N	Y	Y	Y	Y	Y	8

^1.Is it clear in the study what is the ‘cause’ and what is the ‘effect’ (i.e. there is no confusion about which variable comes first)?

^2.Were the participants included in any comparisons similar?

^3.Were the participants included in any comparisons receiving similar treatment/care, other than the exposure or intervention of interest?

^4.Was there a control group?

^5.Were there multiple measurements of the outcome both pre and post the intervention/exposure?

^6.Was follow up complete and if not, were differences between groups in terms of their follow up adequately described and analyzed?

^7.Were the outcomes of participants included in any comparisons measured in the same way?

^8.Were outcomes measured in a reliable way?

^9.Was appropriate statistical analysis used?