Table 3. Ultrasonographic findings as predictors of the varying severity of necrotizing pneumonia.
| NP Severity | Predictors | Sensitivity | Specificity | Positive Predictive Value | Negative Predictive Value |
|---|---|---|---|---|---|
| Percent | |||||
| N1+N2+N3 (n = 72) | P1+P2 | 56.9 | 95.8 | 97.6 | 42.6 |
| P2 | 15.3 | 100 | 100 | 28.2 | |
| HL | 23.6 | 100 | 100 | 30.4 | |
| N2+N3(n = 47) | P1+P2 | 80.0 | 88.2 | 85.7 | 83.3 |
| P2 | 20.0 | 96.1 | 81.8 | 57.6 | |
| HL | 33.3 | 96.1 | 88.2 | 62.0 | |
| N3(n = 24) | P1+P2 | 100 | 75 | 57.1 | 100 |
| P2 | 37.5 | 97.2 | 81.8 | 82.4 | |
| HL | 50 | 93.1 | 70.6 | 84.8 | |
P1 + P2 = decreased-to-poor perfusion; P2 = poor-perfusion; N1 + N2 + N3 = minimal-to-massive necrosis; N2 + N3 = moderate-to-massive necrosis; N3 = massive necrosis; HL = hypoechoic lesion