Table 1.

Risk of bias summary on each risk of bias item for each included study.

	Random Sequence Generation (Selection Bias)	Allocation Concealment (Selection Bias)	Blinding of Participants	Blinding of Outcome Assessment (Detection Bias)	Incomplete Outcome Data (Attrition Bias)	Selective Reporting (Reporting Bias)
Morris et al., 2015 [30]	+	+	+	+	+	?
Freeman et all., 2017 [43]	+	+	+	+	+	+
Fucito et al., 2017 [44]	+	+	+	+	+	+
De Bruin et al., 2018 [45]	+	+	+	+	+	+

(+), (−), and (?) indicate that the study presented low, high, or unclear bias in their applied method, respectively.