Table 2.
Statistics of positive findings on radiography when the computed tomography scan finding is positive.
Accuracy (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | F score (%) | Kappa coefficient | |
---|---|---|---|---|---|---|---|
Rib fracture | 74.9 | 72.8 | 100 | 100 | 23.5% | 84.3 | 0.292 |
Lung contusion | 50.5 | 43.8 | 99.4 | 99.8 | 19.4% | 60.9 | 0.155 |
Subcutaneous emphysema | 83.5 | 56.0 | 99.9 | 99.6 | 79.2 | 71.7% | 0.613 |
Pneumothorax | 46.7 | 12.7 | 100.0 | 100.0 | 42.1 | 22.6% | 0.102 |
PPV, positive predictive value; NPV, negative predictive value.