Table 1.
Characteristics of all subjects
| Characteristics | Nonsmokers | COPD | Smokers |
|---|---|---|---|
| Lung tissues | N=6 | N=6 | N=6 |
| Age (years) | 59.83±1.70 | 67.83±2.30 | 48.67±1.05 |
| Gender (M:F) | 4:2 | 5:1 | 4:2 |
| FEV1 % predicted | 91.95±1.72 | 76.28±1.98 | 90.68±1.41 |
| FEV1/FVC | 84.93±2.41 | 62.82±2.33 | 85.10±2.18 |
| Smoking status | |||
| Never (%) | 100 | 0 | 0 |
| Former (%) | 0 | 0 | 0 |
| Current (%) | 0 | 100 | 100 |
| Pack-years | 0 | 49.00±6.04 | 42.17±4.00 |
| BALF | N=10 | N=10 | N=10 |
| Age (years) | 53.30±2.50 | 68.34±3.77 | 49.52±6.14 |
| Gender (M:F) | 5:5 | 6:4 | 9:1 |
| FEV1 % predicted | 87.13±4.24 | 53.56±8.73 | 86.78±1.65 |
| FEV1/FVC | 84.03±1.81 | 57.11±2.56 | 88.15±2.09 |
| Smoking status | |||
| Never (%) | 100 | 0 | 0 |
| Former (%) | 0 | 20 | 50 |
| Current (%) | 0 | 80 | 50 |
| Pack-years | 0 | 41.35±6.12 | 37.80±2.94 |
Notes: Data are represented as mean ± standard error of the mean. Nonsmokers, nonsmokers without COPD. Smokers, smokers without COPD.
Abbreviation: BALF, bronchoalveolar lavage fluid.