Table 1. Clinical characteristics of healthy non-smokers, healthy smokers, and individuals with confirmed COPD that underwent bronchial biopsies to obtain bronchial brushings.
| Characteristics | Normal (n = 5) | Healthy Smoker (n = 5) | COPD (n = 5) |
|---|---|---|---|
| Age, years | 36 ± 10.5 | 58.4 ± 5.9 | 65.5 ± 5.3 |
| Male/Female | 4/1 | 3/2 | 4/1 |
| Pack-years of Smoking | N/A | 50.4 ± 22.5 | 47.6 ± 25.6 |
| FEV1/FVC | 0.79 ± 0.04 | 0.78 ± 0.05 | 0.59 ± 0.06 |
| FEV1% Predicted | 102.4 ± 6.1 | 96.8 ± 7.9 | 78.0 ± 19.0 |
Data are expressed as mean ±SD for each group. FEV1 forced expiratory volume in 1 second; FVC forced vital capacity, N/A not applicable.