Table 3. Reclassification Tables.
| Model without CCTA Finding | Model with CCTA Finding | ||
|---|---|---|---|
| < 10% | 10–20% | ≥ 20% | |
| Death (n = 92) | |||
| < 10% | 17 (18.5) | 13 (14.1) | 0 (0.0) |
| ≥ 10% and < 20% | 5 (5.4) | 4 (4.4) | 19 (20.7) |
| ≥ 20% | 0 (0.0) | 5 (5.4) | 29 (31.5) |
| Survivor (n = 868) | |||
| < 10% | 525 (60.5) | 70 (8.1) | 0 (0.0) |
| ≥ 10% and < 20% | 104 (12.0) | 25 (2.9) | 58 (6.7) |
| ≥ 20% | 12 (1.4) | 35 (4.0) | 39 (4.5) |
Values are numbers (percentages). Event NRI = (13 + 19 + 0) / 92 - (5 + 5 + 0) / 92 = (14.1% + 20.7%) - (5.4% + 5.4%) = 24.0%, Non-event NRI = (104 + 35 + 12) / 868 - (70 + 58 + 0) / 868 = (12.0% + 4.0% + 1.4%) - (8.1% + 6.7% + 0.0%) = 2.6%, Category-based NRI = 0.240 + 0.026 = 0.266 (95% CI, 0.131–0.400), Category-free NRI = 0.840 (95% CI, 0.654–1.025).
CCTA = coronary computed tomographic angiography, CI = confidence interval, NRI = net reclassification improvement