Table 2.
ROC analysis for Ve, Kep, and their combination model in distinguishing between SIP and MT-SIP
| Parameters | Cut-off | SEN (%) | SPE (%) | PPV (%) | NPV (%) | AUC (95% CI) |
|---|---|---|---|---|---|---|
| Ve | 0.582 | 79.4 | 68.2 | 49.1 | 89.6 | 0.779 (0.695–0.849) |
| Kep (min−1) | 0.747 | 79.4 | 68.2 | 49.1 | 89.6 | 0.766 (0.681–0.838) |
| Ve + Kep | 76.5 | 83.0 | 63.4 | 90.1 | 0.831 (0.752–0.892) |
AUC, area under the curve; IAUGC, the initial area under the signal intensity–time curve; NPV, negative predictive value; PPV, positive predictive value; ROC, receiver operating characteristics; ROI, region of interest; SEN, sensitivity; SPE, specificity.