Table 3

Methodological quality of included studies

McMaster critical review form—quantitative studies
		Arabi et al 29 (2018)	Bellad et al 26 (2016)	Goudar et al 10 (2012)	Kc et al 27 (2016)	Mduma et al 24 (2015)	Msemo et al 25 (2013)	Wrammert et al 28 (2017)
Study purpose		+	+	+	+	+	+	+
Literature		+	+	+	–	+/–	+	+
Design		+	+	+	+	+	+	+/–
Sample	Description	+	+	+	+	+/–	+	+
Sample	Sample size justified	–	–	–	+	+	+	+/–
Outcomes	Reliable	+	+	+	+	+	–	+/-
Outcomes	Valid	+	+	+	–	+	–	+
Intervention	Description	+	–	+	+	+	+	–
	Contamination	+	–	–	–	+	–	–
	Cointervention	+	–	–	–	+	+	–
Results	In terms of statistical significance	+	+	+	+	+	+	+
	Analysis appropriate	+	+	+	+	+	+	+
	Clinical importance	+	+	+	+	+	+	+
	Drop-outs reported	–	+	+	–	–	–	–
Conclusions and implications		+	+	+	+	+	+	+
Score		13/15	11/15	12/15	10/15	12/15	11/15	8/15
Quality		High	Moderate	Moderate	Moderate	Moderate	Moderate	Low