Characteristic | Asthmatic subjects | Asymptomatic controls | Bronchitis controls |
Subjects n | 24 | 45 | 17 |
Age yr | 46±9 (37–70) | 46±11 (27–80) | 46±11 (34–70) |
Sex male | 16 (67) | 16 (67) | 9 (53) |
Smoking | |
Never | 6 (25) | 25 (55.6) | 6 (35.3) |
Past | 9 (37.5) | 16 (35.6) | 8 (47.1) |
Current | 9 (37.5) | 4 (8.9) | 3 (17.6) |
Prebronchodilator FEV1 % pred | 69.2±13.9 | 102.0±8.5 | 103.7±12.4 |