Baseline characteristics of COPD exacerbation cohort
| Age (years) | 71±10 |
| Gender (M:F) | 10:6 |
| BMI (kg/m2) | 24.8±7.7 |
| Admission FEV1 (L) | 0.7±0.2 |
| Admission FVC (L) | 1.5±0.5 |
| Length of stay (days) | 6.2±7.0 |
All values are mean±SD.
BMI, body mass index; COPD, chronic obstructive pulmonary disease; F, female; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; M, male.