Table 2.

Quality assessment of the included articles based on Quality Assessment of Diagnostic Accuracy Studies 2

	Risk of bias				Applicability concerns
Study	Patient selection	Index test	Reference standard	Flow and timing	Patient selection	Index test	Reference standard
Grankvist et al. [23]	Low	Low	High	Low	High	High	High
Heusner et al. [25]	Low	Low	High	Low	Low	Low	Low
Ergul et al. [22]	Low	High	Low	Low	High	Low	Low
Catalano et al. [21]	Low	Low	Low	Low	Low	Low	Low
Grueneisen et al. [24]	Low	High	Low	Low	Low	Low	Low
Sawicki et al. [29]	Low	Low	High	High	Low	Low	Low
Melsaether et al. [26]	Low	Low	High	Low	High	Unclear	Low
Pujara et al. [27]	Low	Low	High	Low	Low	Unclear	Low
Catalano et al. [20]	High	Low	Low	Low	Low	Low	Low
Botsikas et al. [19]	Low	Low	Low	Low	Low	High	Low
Rezk et al. [28]	High	High	Unclear	Low	Low	Low	High