| Nonsmoker | Smoker | COPD |
Patients | 23 | 27 | 16 |
Age yrs | 65.9±1.7 | 64.5±1.9 | 66.8±2.0 |
Sex | | | |
Male | 10 | 16 | 16 |
Female | 13 | 11 | 0 |
GOLD stage | | | |
I | 0 | 0 | 0 |
II | 0 | 0 | 0 |
III | 0 | 0 | 0 |
IV | 0 | 0 | 16 |
Smoking history | | | |
Current | 0 | 27 | 0 |
Ex-smoker n (mean±sem yrs since smoking cessation) | 0 | 0 | 16 (9.5±1.8) |
Pack-yrs | 0 | 45.2±7.3* | 54.8±7.9* |
BMI kg·m−2 | 22.9±0.9 | 22.6±0.6 | 19.4±0.8*,+ |
VC % pred | 111.7±3.9 | 110.7±3.0 | 85.4±3.8*,+ |
FEV1 % pred | 107.8±3.9 | 101.9±3.1 | 24.5±1.4*,+ |
FEV1/FVC % | 76.5±1.3 | 73.6±1.1 | 26.9±1.3*,+ |
Treatment | | | |
Systemic steroids | 0 | 0 | 0 |
Inhaled corticosteroids | 0 | 0 | 6 (37.5)# |
Bronchodilators¶ | 0 | 0 | 16 (100) |
No drug treatment | 23 (100) | 27 (100) | 0 |