Multivariable predictors of all-cause mortality
| Variable | HR | 95% Cl | p Value |
| Age (per decade) | 1.152 | 1.004 to 1.332 | 0.04 |
| Complexity (moderate) | 1.340 | 0.728 to 2.465 | 0.35 |
| Complexity (severe) | 2.719 | 1.493 to 4.954 | 0.001 |
| Cyanosis | 0.676 | 0.417 to 1.095 | 0.11 |
| NYHA class 2 | 1.288 | 0.808 to 2.053 | 0.29 |
| NYHA class 3 | 0.931 | 0.465 to 1.862 | 0.84 |
| NYHA class 4 | 23.654 | 5.169 to 108.249 | <0.0001 |
| Peak oxygen uptake (100 mL/min) | 0.906 | 0.877 to 0.936 | <0.0001 |
| Body mass index | 0.947 | 0.909 to 0.986 | 0.008 |
Significant values are in bold.
NYHA, New York Heart Association.