Added value of ADL
| Model comparison | Model without ADL | Model with ADL | p Value |
| Nagelkerke R2 | 0.33 | 0.46 | |
| Likelihood ratio χ2 | 78.4 (11 df) | 121.0 (13 df) | <0.001 |
| C-statistic (95% CI) | 0.72 (0.67 to 0.76) | 0.78 (0.73 to 0.82) | 0.001 |
| NRI >0 (95% CI) | 0.42 (0.20 to 0.58) | <0.001 | |
| IDI (95% CI) | 0.15 (0.07 to 0.22) | <0.001 |
Comparison of the two nested survival models.
ADL, activities of daily living; IDI, integrated discriminatory improvement; NRI >0 = continuous Net Reclassification Index.