Table 2. Demographics for the subjects donating BW samples (COSMIC cohort).
| Healthy nonsmokers | Smokers without COPD | Smokers with COPD | |
|---|---|---|---|
| Subjects (n) | 34 | 33 | 33 |
| Sex (female/male) | 17/17 | 16/17 | 16/17 |
| Age (years) | 60 (46–65) | 53 (44–65) | 62 (47–66) |
| FEV1% Pred | 120 (92–141) | 106 (91–130) | 81.5 (51–97) |
| FEV1/FVC (%) | 82 (71–91) | 78 (71–88) | 62.5 (43–69) |
| Smoking history | 0 | 34 (15–84) | 40 (17–51) |
| Current smokers | 0 | 33 | 22 |
| Ci/day for the last 6 months | 0 | 17 (10–40) | 11 (0– 25) |
| CB (no/yes) | 0 | 24/9 | 25/8 |
| ICS | 0 | 0 | 0 |
| β antagonists | 0 | 0 | 3 |
| Anticholinergic | 0 | 0 | 2 |
Data shown represent median and range. Abbreviations: CB, chronic bronchitis; Ci, cigarette; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; ICS, inhaled corticosteroid.