Table 3.
Diagnostic indices of each morphology descriptor independently, irrespective of all other descriptors
| Descriptor | Sensitivity |
Specificity |
PPV |
NPV |
LR positive |
LR negative |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | CI | % | CI | % | CI | % | CI | Value | CI | Value | CI | |
| Focus descriptors | 77.7 | 39.9–97.1 | 100 | 29.2–100 | 100 | 59.0–100 | 60 | 14.6–94.7 | – | – | 0.22 | 0.07–0.75 |
| Mass descriptors | ||||||||||||
| Shape | 80.2 | 72.6–86.5 | 70.9 | 51.9–85.7 | 92.4 | 86.1–96.4 | 44.9 | 30.6–59.7 | 2.77 | 1.59–4.83 | 0.28 | 0.19–0.42 |
| Margin | 94.1 | 88.8–97.4 | 77.4 | 58.9–90.4 | 94.8 | 89.6–97.9 | 75.0 | 56.6–88.5 | 4.17 | 2.1–8.0 | 0.08 | 0.04–0.15 |
| Internal enhancement | 80.2 | 72.6–86.5 | 58.0 | 39.0–75.4 | 89.4 | 82.6–94.2 | 40.0 | 25.7–55.6 | 1.9 | 1.25–2.92 | 0.34 | 0.22–0.53 |
| Non-mass descriptors | ||||||||||||
| Symmetry | 100 | 93.1–100 | 48.2 | 29.4–67.4 | 77.6 | 65.7–86.9 | 100 | 76.8–100 | 1.93 | 1.36–2.75 | – | – |
| Distribution | 93.8 | 83.1–98.7 | 50.0 | 31.8–68.1 | 74.1 | 61.5–84.4 | 84.2 | 60.4–96.6 | 1.82 | 1.32–2.67 | 0.12 | 0.04–0.39 |
| Internal enhancement | 87.7 | 75.2–95.3 | 68.7 | 49.9–83.8 | 60.4 | 49.0–71.1 | 81.1 | 68.0–90.5 | 2.81 | 1.6–4.7 | 0.18 | 0.08–0.39 |
CI, confidence interval; LR, likelihood ratio; NPV, negative-predictive value; PPV, positive-predictive value.