Cox proportional hazards model
| HR (95% CI) | p‐value | |
| 6MWD m | 0.996 (0.993–0.999) | 0.003 |
| Age yrs | 1.03 (1.01–1.06) | 0.04 |
| FEV1 L | 0.80 (0.40–1.60) | 0.53 |
| BMI kg·m−2 | 0.95 (0.91–0.99) | 0.01 |
| Charlson Index | 0.84 (0.68–1.03) | 0.10 |
HR: hazard ratio
CI: confidence interval
6MWD: 6‐min walk distance
FEV1: forced expiratory volume in one second
BMI: body mass index
There were 84 deaths and 114 censored observations (58.8%)
Model p‐value was <0.0001