Diagnostic performance of the semiautomated measurement in detecting a significant stenosis degree larger than 70% and 50%
| Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | Accuracy (95% CI) | |
|---|---|---|---|---|---|
| 70% cutoff value for significant stenosis | |||||
| Average | 63% (46–77%) | 96% (90–98%) | 83% (65–93%) | 88% (81–93%) | 87% (83–91%) |
| Corrected | 75% (59–87%) | 98% (94–100%) | 94% (79–99%) | 92% (85–96%) | 92% (87–96%) |
| 50% cutoff value for significant stenosis | |||||
| Average | 72% (60–81%) | 93% (84–97%) | 90% (79–96%) | 78% (68–86%) | 82% (77–86%) |
| Corrected | 78% (67–86%) | 93% (78–90%) | 93% (83–98%) | 79% (69–87%) | 85% (78–90%) |
Note:—The values are given for average semiautomated measurements and for the corrected reference diameter. All differences between these 2 approaches were not significant.
NPV indicates negative predictive value; PPV, positive predictive value.