Table 2.

Comparison between different feature sets.

	Clinical data	Volume data	Clinical + volume combination
AUC*	0.7686 (0.6474–0.8717)	0.6929 (0.5434–0.8262)	0.8358 (0.7321–0.9269)
Sensitivity	0.6022 (0.3607–0.9630)	0.8735 (0.7636–1.0)	0.7695 (0.6102–0.9074)
Specificity	0.8891 (0.5217–1.0)	0.5612 (0.3000–0.7857)	0.8686 (0.6923–1.0)
Youden's index	0.4913 (0.3494–0.6522)	0.4347 (0.1897–0.6628)	0.6380 (0.4475–0.8182)
Accuracy	0.6386 (0.5753–0.7945)	0.7846 (0.7808–0.7945)	0.7780 (0.7397–0.7945)

^*AUC, area under the receiver operating characteristic curve.