Table 2 Univariate analysis performed in the derivation sample (n = 1420)
From: Predictors of one-year mortality after hospitalization for an exacerbation of COPD
Mortality | |||
|---|---|---|---|
No 864 | Yes 495 | p-value | |
Agea | 71.7 (10.2) | 76.1 (9.1) | < 0.0001 |
Sex (% male) | 763 (88.3) | 453 (91.5) | 0.06 |
FEV1% | 46.6 (16.3) | 43.2 (15.4) | 0.004 |
FEV1%/FVC | 53,0 (12.9) | 51.6 (14.2) | 0.18 |
FEV1% categories | < 0.0001 | ||
≥ 80% | 24 (4.5) | 7 (2.2) | |
< 80 - > 50 | 183 (34.0) | 85 (27.3) | |
< 50 - > 30 | 144 (26.8) | 62 (19.9) | |
≤ 30 | 187 (34.8) | 157 (50.5) | |
Body Mass Indexa | 28.1 (5.3) | 27.3 (5.4) | 0.07 |
Smoking habit | 0.0007 | ||
- Never smoker | 29 (3.8) | 19 (4.7) | |
- Current smoker | 246 (32.4) | 89 (21.8) | |
- Ex-smoker | 485 (63.8) | 300 (73.5) | |
Cigarette pack-yearsa | 53.2 (27.3) | 60.9 (31.9) | 0.002 |
Charlson Comorbidity Indexa | 2.5 (1.6) | 3.1 (1.9) | < 0.0001 |
1–2 | 536 (62.0) | 234 (47.3) | |
≥ 3 | 328 (38.0) | 261 (52.7) | |
Ischaemic heart disease | 111 (14.0) | 84 (18.3) | 0.04 |
Cardiac failure | 148 (18.7) | 129 (28.3) | < 0.0001 |
Peripheral arterial disease | 113 (14.4) | 94 (20.8) | 0.004 |
Cerebrovascular disease | 67 (8.5) | 72 (15.9) | < 0.0001 |
Cardiac-Cerebro- Peripheral vascular disease | 320 (40.1) | 250 (54.2) | < 0.0001 |
Dementia | 17 (2.18) | 31 (6.84) | < 0.0001 |
Diabetes mellitus | 208 (25.1) | 129 (26.9) | 0.46 |
Previous COPD hospitalization | 610 (71.9) | 404 (83.8) | < 0.0001 |
Mean of COPD-related admissions in the previous year | 1.7 (1.9) | 2.2 (2.2) | 0.001 |
pH at arrival | 7.40 (0.06) | 7.40 (0.06) | 0.49 |
Acidaemia during admission | 150 (18.4) | 84 (18.1) | 0.89 |
PaO2 at arrivala | 58.8 (15.0) | 59.6 (16.2) | 0.53 |
PaCO2 at arrivala | 46.2 (13.0) | 48.5 (15.2) | 0.01 |
Length of staya | 10.4 (7.2) | 9.7 (6.4) | 0.11 |
Oxygen at discharge | 329 (38.1) | 276 (55.8) | < 0.0001 |
Noninvasive ventilation at discharge | 48 (5.6) | 29 (5.9) | 0.81 |