Table 6. Methodological quality assessment.

	Item 1: Source of Information	Item 2: Inclusion/ Exclusion Criteria	Item 3: Time Period for Identity	Item 4: Subjects consecutive	Item 5: Evaluat-ors Masked	Item 6: Quality Assurance Assessments	Item 7: Samples Exclusions	Item 8: Confoundi-ng assessed/ controlled	Item 9: Missing Data	Item 10: Response Rates	Item 11: Follow-up	Total Items Reported (Max. 11)
Hansen et al. (2005)	Yes	Unclear	No	Yes	No	Yes	Yes	Yes	Unclear	No	Unclear	5
Andersson et al. (2014)	Yes	Unclear	Yes	Yes	No	Yes	Yes	Yes	Unclear	No	Unclear	6
Agodi et al. (2015)	Yes	No	Yes	Yes	No	Yes	No	Yes	No	No	Unclear	5
Alsved et al. (2018)	Yes	No	Yes	Yes	No	Yes	No	Yes	No	No	Unclear	5
Perdelli, Sartini et al. (2006)	Yes	No	No	Yes	No	Yes	No	Unclear	No	No	Unclear	3
Perdelli, Cristina et al. (2006)	Yes	No	No	Yes	No	No	No	Yes	No	No	Unclear	3
Brun et al. (2013)	Yes	Unclear	Yes	Yes	No	Unclear	No	Unclear	No	No	Unclear	3
Curtis et al. (2005)	Yes	Unclear	Yes	Yes	No	Yes	Unclear	Unclear	No	Yes	Unclear	5
Falvey et al. (2007)	Yes	No	Yes	Yes	No	Unclear	Unclear	Unclear	No	Yes	Unclear	4
Sixt et al. (2007)	Yes	No	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Unclear	7
Cho et al. (2018)	Yes	No	Yes	Yes	No	Yes	Yes	Yes	No	No	Unclear	6
% Items (+) reported:	100%	0%	72.7%	100%	0%	63.6%	36.4%	63.6%	9.1%	27.3%	0%