Table 2. Summary of the JBI Critical Appraisal Tool for Cross-Sectional studies.

Quality check was done as per the JBI Critical Appraisal Scale (Yes, No, Unclear, N/A).

JBI, Joanna Briggs Institute.

Selection	Kok-Yong Chin et al. [9]	Chi Chen et al. [24]	Sim MY et al. [25]	Rafiq R et al. [26]	LM Wentz et al. [27]	Ningjian Wang et al. [35]	Anna Książek et al. [36]
Were the criteria for inclusion in the sample clearly defined?	No	Yes	Yes	Yes	Yes	No	No
Were the study subjects and the setting described in detail?	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Was the exposure measured in a valid and reliable way?	Yes	Yes	Yes	Yes	Yes	Yes	Unclear
Were objective, standard criteria used for measurement of the condition?	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Were confounding factors identified?	Yes	Unclear	Unclear	Yes	No	Yes	Unclear
Were strategies to deal with confounding factors stated?	Yes	Unclear	Unclear	Unclear	No	Unclear	Unclear
Were the outcomes measured in a valid and reliable way?	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Was appropriate statistical analysis used?	Yes	Yes	Yes	Yes	Yes	No	Yes
Total	7/8	6/8	6/8	7/8	6/8	5/8	4/8
Quality %	88%	75%	75%	88%	75%	63%	50%