Table 3. .

ROC analysis of ADC histogram parameters for discriminating pleomorphic adenomas from malignant parotid gland tumors

Parameters	AUC	Cut-off value	Sensitivity	Specificity	p- value	Youden index
ADC_minimum	0.705	60.17	66.7%	73.7%	0.013	0.404
ADC_maximum	0.787	209.18	86.1%	73.7%	0.001	0.598
ADC_mean	0.851	132.79	88.9%	73.7%	0.000	0.626
Variance	0.709	679.97	61.1%	68.4%	0.011	0.295
Skewness	0.781	−0.29	78.9%	63.9%	0.001	0.428
ADC_10th	0.866	107.04	86.1%	73.7%	0.000	0.598
ADC_50th	0.841	127.42	91.7%	73.7%	0.000	0.654
ADC_90th	0.787	166.87	86.1%	73.7%	0.001	0.598
ADC_99th	0.760	198.50	83.3%	78.9%	0.002	0.622

ADC, apparent diffusion coefficient; AUC, area under the curve; ROC, receiver operating characteristic.