Table 4.
Diagnostic test performances in the detection of posttraumatic pneumothorax.
| LUS vs. composite standard (n = 96) | LUS vs. gold standard (n = 16) | CXR vs. gold standard (n = 16) | ||||
|---|---|---|---|---|---|---|
| % | 95% CI | % | 95% CI | % | 95% CI | |
| Sensitivity | 100 | 59.04–100 | 100 | 59.04–100 | 100 | 59.04–100 |
| Specificity | 97.75 | 92.12–99.73 | 88.89 | 51.75–99.72 | 100 | 66.37–100 |
| PPV | 77.78 | 39.99–97.19 | 87.50 | 47.35–99.68 | 100 | 59.04–100 |
| NPV | 100 | 95.85–100 | 100 | 63.06–100 | 100 | 66.37–100 |
| Accuracy | 97.92 | 92.68–99.75 | 93.75 | 69.77–99.84 | 100 | 79.41–100 |
| LR of positive test | 44.5 | 11.30–175.15 | 9.00 | 1.42–57.12 | ||
| LR of negative test | 0.00 | 0.00 | 0.00 | |||
LUS, lung ultrasound; CXR, chest X-ray; CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value; LR, likelihood ratio.