Table 1.

Quality assessment of included studies based on Effective Public Health Practice Project (EPHPP) criteria.

Study first author, year, and reference	EPHPP criteria						Global rating
	Selection bias	Study design	Confounders	Blinding	Data collection methods	Withdrawals and dropouts
Burns, 2011 [23]	Weak	Moderate	Weak	Moderate	Strong	Strong	Weak
Hawley, 2013 [24]	Weak	Weak	Weak	Moderate	Weak	Weak	Weak
Manuvinakurike, 2014 [22]	Weak	Strong	Strong	Moderate	Moderate	Strong	Moderate
Martin, 2012 [25]	Moderate	Strong	Weak	Moderate	Strong	Weak	Weak
Morrison, 2017 [26]	Moderate	Moderate	Weak	Strong	Strong	Weak	Weak
Ortiz-Catalan, 2016 [27]	Moderate	Moderate	Weak	Moderate	Weak	Weak	Weak
Sadasivam, 2016 [21]	Weak	Strong	Strong	Strong	Moderate	Strong	Moderate
Zeevi, 2015 [28]	Weak	Strong	Weak	Moderate	Weak	Weak	Weak