Supplementary Table 1.

Quality assessment of cross-sectional studies^*

Author	Year	1) Define the source of information (survey, record review)	2) List inclusion and exclusion criteria for exposed and unexposed subjects (cases and controls) or refer to previous publications	3) Indicate time period used for identifying patients	4) Indicate whether or not subjects were consecutive if not population-based	5) Indicate if evaluators of subjective components of study were masked to other aspects of the status of the participants	6) Describe any assessments undertaken for quality assurance purposes	7) Explain any patient exclusions from analysis	8) Describe how confounding was assessed and/or controlled.	9) If applicable explain how missing data were handled in the analysis	10) Summarize patient response rates and completeness of data collection	11) Clarify what follow-up, if any, was expected and the percentage of patients for which incomplete data or follow-up was obtained	Total quality score
Iryna et al	2007	1	1	1	1	1	0	1	1	0	1	0	8
Parveen et al	2012	1	1	1	1	1	0	0	1	0	1	1	8
Margaret et al	2014	1	1	1	0	1	0	1	1	1	1	1	9
Verelst et al	2014	1	0	1	1	1	1	0	1	1	1	1	9
Stephen et al	2015	1	1	1	0	1	0	0	0	1	1	1	7
Jennifer et al	2015	1	1	1	0	1	1	1	1	0	1	0	8
Akashi et al	2016	1	0	1	1	1	0	0	0	0	1	1	6
Elfalet et al	2018	1	1	1	1	1	0	0	1	1	1	1	9
Bikila et al	2019	1	1	1	0	1	1	0	1	1	1	1	9

^*The study quality was assessed according to the 11 items recommended by the Agency for Healthcare Research and Quality (AHRQ) for cross-sectional studies. 1 point if the item was contemplated in the study, 0 point if the item was not, and unable to determine. 1 = “Yes”, 0 = “No”, “Unable to determine”, or “Not applicable”