Table 3.
Diagnostic characteristics of NEXUS, X-Ray and E-FAST in diagnosing pneumothorax
| Characters | Value | 95% CI | Value | 95% CI | Value | 95% CI |
|---|---|---|---|---|---|---|
| NEXUS | X-RAY | E-FAST | ||||
| Sensitivity | 100.0% | 83.2%–100.0% | 15.0% | 3.2%–37.9% | 70.0% | 45.7%–88.1% |
| Specificity | 13.3% | 3.8%–30.7% | 93.3% | 77.9%–99.2% | 96.7% | 82.8%–99.9% |
| DA | 48.0% | 33.7%–62.6% | 62.0% | 47.2%–75.3% | 86.0% | 73.3%–94.2% |
| YI | 13.3% | 1.2%–25.5% | 8.3% | -9.7%–26.3% | 66.7% | 45.6%–87.8% |
| PPV | 43.5% | 28.9%–58.9% | 60.0% | 14.7%–94.7% | 93.3% | 68.1%–99.8% |
| NPV | 100.0% | 39.8%–100.0% | 62.2% | 46.5%–76.2% | 82.9% | 66.4%–93.4% |
| LR+ | 1.15 | 1.00–1.33 | 2.25 | 0.41–12.28 | 21.00 | 2.99–147.35 |
| LR- | 0.00 | 0.00–0.00 | 0.91 | 0.74–1.12 | 0.31 | 0.16–0.61 |
| LR | Infinity | Infinity–Infinity | 2.47 | 0.37–16.32 | 67.67 | 7.42–617.45 |
| Kappa | 0.110 | 0.002–0.218 | 0.095 | -0.110–0.300 | 0.696 | 0.492–0.899 |
| ^P-value | 0.089 | 0.336 | <0.001* | |||
^Kappa test.
⁎
Significant (<0.050)
CI, Confidence interval, DA, Diagnostic accuracy, YI, Youden's Index, PPV, Positive Predictive value, NPV, Negative Predictive value, LR+, Positive likelihood ratio, LR-, Negative likelihood ratio, LR, Diagnostic odds ratio