HR for death and the corresponding 95% CI among patients hospitalised for acute exacerbations of chronic obstructive pulmonary disease by selected covariables
| Model 1 | Model 2 | |||
| HR | 95% CI | HR | 95% CI | |
| Troponin T, ng/l | ||||
| <14.0 | 1 | 1 | ||
| 14.0–39.9 | 4.5 | 1.2 to 16 | 1.8 | 0.73 to 4.4 |
| ≥40.0 | 8.9 | 2.4 to 32 | 2.9 | 1.2 to 7.0 |
| p Trend | <0.001 | 0.017 | ||
| Female versus male | 2.0 | 1.2 to 3.6 | 1.7 | 0.99 to 3.0 |
| Age, years | ||||
| <65 | 1 | 1 | ||
| 65–74 | 1.9 | 0.80 to 3.6 | 2.7 | 1.2 to 6.3 |
| ≥75 | 2.7 | 1.1 to 6.6 | 3.8 | 1.6 to 9.4 |
| p Trend | 0.018 | 0.003 | ||
| Cephalisation, yes versus no | 3.4 | 1.8 to 6.3 | 3.2 | 1.7 to 6.0 |
| Heart rate ≥100/min, yes versus no | 2.8 | 1.5 to 5.3 | 2.5 | 1.3 to 4.6 |
Model 1: data from 219 admissions among 99 patients using extended Cox regression analysis with time-dependent covariables.
Model 2: Cox regression analysis using data from each patient's initial admission only.