Table 1 Clinical and functional data of the subjects included in this study.
Never smokers (n = 22) | Smokers with normal lung function (n = 20) | Stable COPD Patients (n = 13) | AECOPD Patients (n = 20) | |
|---|---|---|---|---|
Age (years) | 57.8 ± 6.3 | 59.0 ± 1.9 | 60.0 ± 2.0 | 65.0 ± 2.0* |
Smoking history (pack years) | 0 | 43.1 ± 3.2 | 46.0 ± 3.0 | 65.0 ± 6.0 |
FEV1 (% ref) | 95.8 ± 5.1 | 93.0 ± 2.5 | 58.0 ± 2.0+ | 38.0 ± 3.0† |
FEV1/FVC (%) | 81.8 ± 2.5 | 75.0 ± 1.0 | 56.0 ± 2.0+ | 46.0 ± 2.0† |