Table 2.

Systematic review quality evaluation.

Author	1: Comprehensive and reproducible search?	2. Clearly focussed question?	3. Inclusion/exclusion criteria clearly stated?	4. Are primary RCT data reported	5. Methodological quality assessment?	6. Meta: Are primary studies combined appropriately?	7. Meta: Combined statistics reported?	8. Meta: Report absolute numbers and summary stats?	9. Is heterogeneity discussed?	10. Is relevance/significance discussed?	Total out of 10
Jolliffe, D	?	+	+	+	?	?	?	?	?	+	4
Martineau, A	+	+	+	+	+	?	+	+	+	+	9
Yamshchikov, A	+	?	+	+	+	?	?	?	+	+	6
Rejnmark, L	?	+	+	?	?	+	?	+	–	+	5
Jayawardena, R.	+	+	+	+	+	?	?	?	+	+	7
Jat, K.R et al.	+	+	+	+	+	+	+	+	+	+	10
VuichardGysin, D.	+	+	+	+	+	+	+	+	+	+	10
Xiao L et al	+	+	+	–	+	+	+	+	+	+.	9
Charan J et al.	+	+	+	+	+	–	+	+	+	+	9
Marzetke, F.	+	+	+	–	+	?	?	?	+	+	6
Larkin, A.	+	+	+	+	+	?	?	?	–	+	6
Martineau, A.R.	+	+	+	+	+	+	+	+	+	+	10
Zittermann, A.	+	–	–	+	?	?	?	?	+	+	4
Yakoob, M.Y.	+	+	+	+	+	+	+	+	+	+	10
Christensen, N.	+	+	+	+	+	+	+	+	+	+	10
Jat KR	+	+	+	–	+	+	+	+	+	+	9
Mao, S.	+	+	+	+	+	+	+	+	+	+	10
Moroti, R.	–	–	–	+	–	+	+	+	–	–	4
Reinehr, T.	–	–	–	–	–	–	–	–	–	+	1
Autier 2017	+	+	+	–	+	+	–	+	–	+	7
Bergman 2013	+	+	+	+	+	+	+	+	+	+	10

Legend: Yes (+); No (-); Can't Tell (?).