Table 1.
Baseline characteristics
| Characteristics | |
|---|---|
| Number of patients | 40 |
| Age, years | 66 (10) |
| Sex, % male | 52.5 |
| Former smoker, % | 70 |
| Current smoker, % | 30 |
| Number of pack-years | 49 (35) |
| Body mass index, kg/m2 | 24.9 (4.8) |
| Post-bronchodilator FEV1 (% predicted) in stable state | 51 (18) |
| Post-bronchodilator FEV1 (L) in stable state | 1.3 (0.6) |
| Viral infection, % | 47.5 |
| Bacterial infection, % | 42.5 |
| Blood eosinophils, 10E9/L | 0.15 (0.19) |
| Blood neutrophils, 10E9/L | 8.6 (3.7) |
| pH on admission | 7.43 (0.04) |
| PaO2 (kPa) on admission | 8.6 (2.1) |
| PaCO2 (kPa) on admission | 5.4 (1.0) |
| Antibiotics % of usage during admission | 62.5 |
| Antiviral medication % of usage during admission | 7.5 |
| Days to discharge | 5 (2) |
| 6-month readmission rate, % | 40 |
Note: Values are presented as mean (SD) unless stated otherwise.
Abbreviation: FEV1, forced expiratory flow in one second.