Table 3.

Variables of receiver-operating characteristic (ROC) analysis for three parameters each alone for the differential diagnosis of pleomorphic adenoma and adenolymphoma

Variables	ADC	FA	SWV
AUC	0.84	0.98	0.89
Cut-off point	0.98 (10−3 mm2 s−1)	0.19	2.03 (m s−1)
Sensitivity (with 95% CI)	80.00	93.33	86.67
Specificity % (with 95% CI)	81.25	93.75	87.5
p-value (Z test)	<0.0001	<0.0001	<0.0001
Youden index (J)	0.61	0.87	0.74

ADC, apparent diffusion coefficient; AUC, area under the ROC curve; CI, confidence interval; FA, fractional anisotropy; SWV, shear-wave velocity.

All the variables were obtained with ROC analysis.