Table 1.
Differences between dead and surviving patients (mean ± SD or %).
| Alive (n = 294) | Dead (n = 122) | p-value | |
| Age (years) | 68.2 ± 10.9 | 72.1 ± 8.7 | 0.0005 |
| Women | 54.1 | 46.6 | 0.03 |
| Current smokers | 24.6 | 28.7 | 0.39 |
| Pack years | 35.7 ± 24.5 | 34.3 ± 19.8 | 0.59 |
| Living alone | 52.6 | 50.8 | 0.74 |
| FEV1 (% pred) | 40.6 ± 19.2 | 33.5 ± 14.4 | 0.0005 |
| ≥ 2 hospitalizations in previous 12 months | 30.2 | 52.0 | <0.0001 |
| Health status (SGRQ) | |||
| Symptoms | 63 ± 20 | 69 ± 16 | 0.006 |
| Activity | 65 ± 22 | 72 ± 20 | 0.002 |
| Impact | 44 ± 19 | 51 ± 19 | 0.001 |
| Total | 56 ± 17 | 63 ± 16 | 0.0002 |
| Co-morbidity | |||
| Cardio-vascular disease | 42.9 | 50.0 | 0.18 |
| Diabetes | 8.5 | 15.6 | 0.03 |
| COPD severity according to the GOLD classification (12) | 0.006 | ||
| GOLD stage I-II | 28 | 15 | |
| GOLD stage III | 31 | 29 | |
| GOLD stage IV | 41 | 57 | |