Table 1. Quality appraisal of randomized controlled trials using the Cochrane bias assessment tool.

+ indicates a low risk of bias, and - indicates a high risk of bias

Author and year of publication	Random sequence generation	Allocation concealment	Finding of participants and personnel	Blinding of outcome assessment	Incomplete outcome data	Selective reporting	Other bias
Anker et al., 2021 [10]	+	+	+	+	-	-	-
Böhm et al., 2021 [11]	+	+	+	+	-	-	Selection bias
Fitchett et al., 2019 [12]	+	+	+	+	-	-	Post hoc nature
Lee et al., 2021 [13]	+	+	+	+	-	-	Selection bias
Omar et al., 2020 [14]	+	+	+	+	-	-	Observer bias
Omar et al., 2021 [15]	+	+	+	+	-	-	Post hoc nature
Santos-Gallego et al., 2021 [16]	+	+	+	+	-	-	Dropouts
Zannad et al., 2020 [17]	+	+	+	+	-	-	-