Intraoperative application of three-dimensional printed guides in total hip arthroplasty: A systematic review

Table 2 Tubular presentation of QUADAS-2 results for included studies

Ref.	Risk of bias				Applicability concerns
	Patient selection	Index test	Reference standard	Flow and timing	Patient selection	Index test	Reference standard
Dos Santos-Vaquinhas et al[22]	+	+	+	+	+	+	+
Xu et al[23]	+	+	+	+	+	+	+
Zhang et al[24]	+	-	-	-	+	+	+
Chen et al[25]	+	+	+	+	+	+	+
Kida et al[26]	+	+	+	+	+	+	+
Mishra et al[27]	+	+	+	+	+	+	+
Tu et al[28]	?	-	-	-	+	+	+
Yan et al[29]	+	+	+	+	+	+	+
	+	Low risk	-	High risk	?	Unknown risk