Table 3.

Risk of bias within studies according to the ROBINS-I scale.

Study	Confounding bias	Selection bias	Deviation from intended intervention	Missing data	Measurement in outcome	Selection of reported result	Classification of intervention
Ye et al. (32)	+	+	+	+	+	+	+
Chairat et al. (30)	+	+	+	+	+	+	+
Savarese et al. (25)	+	+	+	+	+	+	+
Kim et al. (44)	+	+	+	+	+	–	+
Jin et al. (42)	+	?	?	+	+	?	+
Wienbergen et al. (26)	+	+	?	+	+	–	+
Formiga et al. (31)	+	+	?	+	+	–	+
van den Berge et al. (43)	+	+	+	+	+	–	+
Goh et al. (41)	+	+	+	?	–	–	+