Table 2.

JBI critical appraisal checklist applied for excluded studied reporting incidence and prevalence data.

Author Name/Year	Sample was representative?	Participants appropriately recruited?	Sample size was adequate?	Study subjects and the setting described?	Data analysis conducted	Objective, standard criteria, reliably used?	Appropriate statistical analysis used	Confounding factors/subgroups/differences identified and accounted?	Subpopulations identified using objective criteria
Abou-Gamel et al. (2014)	No	No	No	Unclear	Yes	Yes	Unclear	Unclear	Unclear
Al-Orf (2012)	No	Unclear	No	Unclear	Yes	Yes	Yes	No	Unclear
Alsenany and Al Saif (2015)	Yes	No	No	Unclear	Yes	Unclear	Unclear	Unclear	Yes
Karim et al., (2000)	Yes	No	Yes	No	No	Unclear	Unclear	Unclear	Unclear