Number of true and false positive and negative cases, as well as sensitivity, specificity, and negative and positive predictive values using different thresholds of maximal carotid wall thickness
| >4 mm | >5 mm | >6 mm | |
|---|---|---|---|
| True-positive cases | 10 | 7 | 5 |
| False-negative cases | 2 | 5 | 7 |
| True-negative cases | 28 | 39 | 53 |
| False-positive cases | 50 | 39 | 25 |
| Sensitivity | 83.3% | 58.3% | 41.7% |
| Specificity | 35.9% | 50.0% | 67.9% |
| Negative predictive value | 93.3% | 88.6% | 88.3% |
| Positive predictive value | 16.7% | 15.2% | 16.7% |