Table 1 Clinical features and comorbidities in all patients included, in survivors and in non-survivors
From: Predictors of mortality in COPD exacerbation cases presenting to the respiratory intensive care unit
Variables | Total (N = 384) | Survivors (n = 340) | Non-survivors (n = 44) | P value |
|---|---|---|---|---|
Age, years | 78.2 (8.2) | 78.0 (8.2) | 79.7 (7.6) | 0.185 |
Gender | ||||
Male | 280 (72.9%) | 244 (71.8%) | 36 (81.8%) | 0.158 |
Female | 104 (27.1%) | 96 (28.2%) | 8 (18.2%) | |
BMI, kg/m2 | 23.2 (5.3) | 23.3 (5.2) | 22.7 (5.8) | 0.579 |
Smoking status | ||||
Never smoker | 85 (22.3%) | 77 (22.8%) | 8 (18.2%) | 0.073 |
Former smoker | 242 (63.4%) | 208 (61.5%) | 34 (77.3%) | |
Current smoker | 55 (14.4%) | 53 (15.7%) | 2 (4.5%) | |
Smoking exposure, pack-years | 35.6 (34.5) | 35.3 (35.0) | 38.3 (30.8) | 0.593 |
Long-term home oxygen therapy | 76 (19.8%) | 68 (20.0%) | 8 (18.2%) | 0.776 |
ADL index at admission | 41.3 (30.2) | 43.1 (30.0) | 28.6 (28.9) | 0.003 |
Requirement for IMV | 53 (13.8%) | 24 (7.1%) | 29 (65.9%) | < 0.001 |
Ventilator use time, hours | 294.2 (354.5) | 269.7 (317.0) | 438.3 (505.3) | 0.042 |
Comorbidities | ||||
Respiratory failure | 294 (76.6%) | 258 (75.9%) | 36 (81.8%) | 0.382 |
Hypertension | 214 (55.7%) | 194 (57.1%) | 20 (45.5%) | 0.145 |
CHD | 115 (29.9%) | 102 (30.0%) | 13 (29.5%) | 0.951 |
CHF | 76 (19.8%) | 54 (15.9%) | 22 (50.0%) | < 0.001 |
Atrial fibrillation | 64 (16.7%) | 55 (16.2%) | 9 (14.1%) | 0.474 |
Diabetes | 97 (25.3%) | 85 (25.0%) | 12 (27.3%) | 0.744 |
CKD | 55 (14.3%) | 47 (13.8%) | 8 (18.2%) | 0.437 |