ROC analysis showing sensitivity, specificity, PPV, and NPV for adverse outcome of multiple cutoff levels of ADC (in 10−6/mm2/s) of the basal ganglia*
| Cutoff Level | Sensitivity | 95% CI† | Specificity | 95% CI† | PPV | NPV |
|---|---|---|---|---|---|---|
| <574 | 7.14 | 1.2–33.9 | 100.00 | 58.9–00.0 | 100.0 | 35.0 |
| <1018.5 | 71.43 | 41.9–91.4 | 100.00 | 58.9–100.0 | 100.0 | 63.6 |
| <1061.5 | 78.57 | 49.2–95.1 | 71.43 | 29.3–95.5 | 84.6 | 62.5 |
| <1104.5 | 78.57 | 49.2–95.1 | 57.14 | 18.8–89.6 | 78.6 | 57.1 |
| <1148 | 85.71 | 57.2–97.8 | 28.57 | 4.5–0.7 | 70.6 | 50.0 |
| <1239 | 92.86 | 66.1–98.8 | 0.00 | 0.0–41.1 | 65.0 | 0.0 |
* Area under the ROC curve = 0.786. Significance level P (area = 0.5) = .0135.
† 95% CI = 0.554–0.931.