Sensitivity, specificity and predictive values for difference of inferior mesenteric artery pulsatility index (PI) between the first (active state of disease) and the second measurement (remission) in the prediction of early relapse or persistent remission within six months
| PI increase (remission) | PI decrease (relapse) | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
| 0.5 | 0.3 | 0.73 | 0.75 | 0.77 | 0.69 |
| 0.7 | 0.4 | 0.66 | 0.66 | 0.65 | 0.54 |
| 0.9 | 0.5 | 0.46 | 0.42 | 0.39 | 0.45 |
PPV, positive predictive value; NPV, negative predictive value.