Table 5:

ROC analysis showing sensitivity, specificity, PPV, and NPV for abnormal outcome of multiple cutoff levels of ADC (in 10⁻⁶/mm²/s) of the brain stem^*

Cutoff Level	Sensitivity	95% CI†	Specificity	95% CI†	PPV	NPV
<736.5	5.56	0.9–7.4	100.00	54.1–100.0	100.0	26.1
<988	66.67	41.0–86.6	100.00	54.1–00.0	100.0	50.0
<995	66.67	41.0–86.6	83.33	36.1–97.2	92.3	45.5
<1093	83.33	58.6–96.2	50.00	12.4–87.6	83.3	50.0
<1151.5	94.44	72.6–99.1	33.33	5.3–77.3	81.0	66.7
<1182	100.00	81.3–100.0	33.33	5.3–77.3	81.8	100.0

^*Area under the ROC curve = 0.815. Significance level P (area = 0.5) = .0061.

^†95% CI = 0.605–0.941.