Table 5.
Discrimination Abilities of the Cox Models
| Uno’s C-Statistic (95% CI) | Uno’s C-Statistic, Averaged Value of 10-Fold Cross Validation | |
|---|---|---|
| All | ||
| Clinical | 0.561 (0.501-0.622) | 0.576 |
| Clinical + NT-proBNP | 0.658 (0.604-0.711) | 0.645 |
| Clinical + NT-proBNP + echocardiographic congestion grade | 0.671 (0.619-0.722) | 0.666 |
| Sinus rhythm | ||
| Clinical | 0.566 (0.475-0.658) | 0.577 |
| Clinical + NT-proBNP | 0.672 (0.601-0.744) | 0.655 |
| Clinical + NT-proBNP + echocardiographic congestion grade | 0.673 (0.601-0.745) | 0.670 |
| Atrial fibrillation | ||
| Clinical | 0.560 (0.465-0.655) | 0.585 |
| Clinical + NT-proBNP | 0.649 (0.562-0.737) | 0.639 |
| Clinical + NT-proBNP + echocardiographic congestion grade | 0.686 (0.604-0.769) | 0.667 |
Clinical model included age, sex, and New York Heart Association functional class.
NT-proBNP = N-terminal pro B-type natriuretic peptide.