Table 1b.

Results of quality assessment according to the Quality Assessment of Diagnostic Accuracy Studies-2 for the node positive converted to node negative

Study	Risk of bias				Applicability concerns
	Patient selection	Index test	Reference standard	Flow and timing	Patient selection	Index test	Reference Standard
Kinoshita et al.	2	1	1	1	1	2	1
Ozmen et al.	2	1	1	1	1	2	1
Thomas et al.	2	1	1	2	1	2	1
Chintamani et al.	2	1	1	1	2	1	1
RobolloAguirre et al.	2	1	1	1	1	2	1
Shigekawa et al.	1	1	1	1	1	1	1
Takashia et al.	2	1	1	1	1	1	1
RobolloAguirre et al.	2	1	1	1	1	2	1
Kuehn et al.	2	1	1	2	2	1	1
Lee et al.	1	2	1	1	1	1	1
Yu et al.	2	1	1	1	2	1	1
Carrera et al.	1	1	1	1	1	1	1
Cao et al.	2	1	1	1	2	1	1

1=Low risk; 2=High risk; ?=Unclear risk