Table 2.

ROC analysis of T2WI, DWI, and T2WI + DWI

Items	AUC	SD	95% CI for AUC		P	Cutoff value	Sensitivity (%)	Specificity (%)	Youden index
			Lower	Upper
DWI	0.735	0.024	0.703	0.766	<0.001	3	47.3	94.6	0.419
T2WI	0.700	0.024	0.667	0.732	<0.001	3	53.8	79.7	0.335
T2WI + DWI	0.749	0.023	0.717	0.778	<0.001	5–6	53.8	89.2	0.430

T2WI: T2-weighted imaging; DWI: Diffusion-weighted imaging; ROC: Receiver operating characteristic; AUC: Area under ROC curve; CI: Confidence interval; SD: Standard deviation.