ROC curve analysis for CAWT and smoking
| Criterion (mm) | Sensitivity | 95% CI | Specificity | 95% CI | +LR | −LR |
|---|---|---|---|---|---|---|
| 0.5 | 100.00 | 94.9–100.0 | 0.00 | 0.0–3.8 | 1.00 | NC |
| 0.6 | 91.55 | 82.5–96.8 | 12.37 | 6.6–20.6 | 1.04 | 0.68 |
| 0.7 | 77.46 | 66.0–86.5 | 25.77 | 17.4–35.7 | 1.04 | 0.87 |
| 0.8 | 61.97 | 49.7–73.2 | 37.11 | 27.5–47.5 | 0.99 | 1.02 |
| 0.9 | 45.07 | 33.2–57.3 | 49.48 | 39.2–59.8 | 0.89 | 1.11 |
| 1.0 | 39.44 | 28.0–51.7 | 61.86 | 51.4–71.5 | 1.03 | 0.98 |
| 1.1 | 26.76 | 16.9–38.6 | 75.26 | 65.5–83.5 | 1.08 | 0.97 |
| 1.2 | 16.90 | 9.1–27.7 | 80.41 | 71.1–87.8 | 0.86 | 1.03 |
| 1.3 | 8.53 | 3.5–18.9 | 85.70 | 78.6–91.4 | 0.76 | 1.01 |
| 1.4 | 4.23 | 0.9–11.9 | 91.75 | 84.4–96.4 | 0.51 | 1.04 |
| 1.5 | 0.00 | 0.0–5.1 | 100.00 | 96.2–100.0 | NC | 1.00 |