Table 1. STARD checklist items that associated with QUADAS tools.

Questions in each domain of QUADAS-2 tools	STARD items
	2015	2003
Patients selection domain
Was a consecutive or random sample of patients enrolled?	9	5
Was a case-control design avoided?	6, 7	4, 5
Did the study avoid inappropriate exclusions?	6, 7	4, 5
Index test domain
Were the index test results interpreted without knowledge of the results of the reference standard?	13a	11
If a threshold was used, was it pre-specified?	12a, 17	9
Reference Standard domain
Is the reference standard likely to correctly classify the target condition?	11, 12b	7
Were the reference standard results interpreted without knowledge of the results of the index test?	13b	11
Flow and Timing domain
Was there an appropriate interval between index tests and reference standard?	22	17
Did all patients receive a reference standard?	19	16
Did all patients receive the same reference standard?	?	?
Were all patients included in the analysis?	19, 23	17, 19

?, Not mentioned. QUADAS, Quality Assessment of Diagnostic Accuracy Studies; STARD, Standards for Reporting of Diagnostic Accuracy.