TABLE 3.
Variable | AUC | 95% CI | Cut-off value | Sensitivity | Specificity |
ADC histogram parameters | |||||
10th percentile | 0.860 | 0.787–0.934 | 937.50 | 80.0% | 83.3% |
90th percentile | 0.759 | 0.673–0.846 | 1216.00 | 100.0% | 42.3% |
Mean | 0.823 | 0.748–0.899 | 1108.79 | 85.0% | 69.2% |
Median | 0.824 | 0.748–0.900 | 1085.50 | 85.0% | 67.9% |
Minimum | 0.655 | 0.545–0.766 | 553.50 | 57.5% | 75.6% |
Root mean squared | 0.818 | 0.742–0.893 | 1111.21 | 85.0% | 67.9% |
Kurtosis | 0.666 | 0.567–0.765 | 5.07 | 87.5% | 41.0% |
Skewness | 0.726 | 0.632–0.821 | 0.78 | 85.0% | 59.0% |
Direct ADC measurements | |||||
Minimum ADC | 0.810 | 0.721–0.899 | 945.50 | 65.0% | 91.0% |
Mean ADC | 0.844 | 0.770–0.918 | 1073.17 | 67.5% | 89.7% |
Multivariate logistic regression models | |||||
ADC histogram parameters | 0.916 | 0.868–0.964 | 82.5% | 85.9% | |
Direct ADC measurements | 0.851 | 0.780–0.921 | 67.5% | 88.5% | |
ADC histogram parameters + direct ADC measurements | 0.938 | 0.896–0.980 | 87.5% | 87.2% |
AUC, area under the ROC curve; CI, confidence interval.