Six-year risk prediction accuracy for lung cancer at inclusion from the PLCOm2012 (n = 11 652)
| Variable | Value (95% CI) |
|---|---|
| Expected-to-observed ratio | 0.68 (0.59 to 0.79) |
| Slope | 0.8 (0.6 to 0.9) |
| Intercept | −0.6 (−1.2 to 0) |
| C-statistic | 0.727 (0.679 to 0.77) |
| Sensitivity, % | |
| Threshold 1.51% | 52.3 (44.6 to 59.8) |
| Threshold 1.70% | 49.4 (41.8 to 57.1) |
| Threshold 2.00% | 44.9 (37.4 to 52.6) |
| Specificity, % | |
| Threshold 1.51% | 81.6 (80.8 to 82.3) |
| Threshold 1.70% | 84.3 (83.6 to 85.0) |
| Threshold 2.00% | 87.7 (87.0 to 88.3) |
| Positive predictive value, % | |
| Threshold 1.51% | 4.2 (3.4 to 5.1) |
| Threshold 1.70% | 4.6 (3.7 to 5.7) |
| Threshold 2.00% | 5.3 (4.2 to 6.5) |
Note: CI = confidence interval.