No. of Subjects | Never-smokers | Smokers | Patients with COPD |
---|---|---|---|
n = 21 | n = 31 | n = 83 | |
Age (years) | 64.9 ± 6.5 | 63.7 ± 8.9 | 67.0 ± 8.4 |
Male/Female | 19/0 | 29/2 | 79/4 |
Current/ex-smokers | 0/0 | 27/4 | 36/47 |
smoking, pack-yrs | 0 | 40 (23–78) | 48 (31–109) |
FEV1% predicted | 93.5 ± 8.2 | 90.5 ± 6.4 | 49.3 ± 10.7 |
FEV1/FVC% | 78.4 ± 5.1 | 72.9 ± 6.0 | 51.6 ± 9.3 |
Inhaled corticosteroid use | 0 | 0 | 46 |