Table 2:

ADC skewness threshold obtained from ROC curve analysis to predict local failure

Parameter	ADC Skewness
Threshold	≤0.55
P value	.0001
Area under the ROC curve	0.68
True-positive	21
False-positive	49
True-negative	82
False-negative	6
Sensitivity	78%
Specificity	63%
Accuracy	65%
Positive predictive value	30%
Negative predictive value	93%