Table 1 Characteristics of subjects
From: Patterns of airway inflammation and MMP-12 expression in smokers and ex-smokers with COPD
Variables | COPD smokers | COPD ex-smokers | 'Healthy' smokers | Healthy never-smokers |
|---|---|---|---|---|
Subjects (n) | 22 | 17 | 8 | 11 |
Male/Female | 22/0 | 14/3 | 7/1 | 4/7 |
Age (years) | 64.2 ± 4.9 | 62.7 ± 6.3 | 61.7 ± 6.2 | 59.8 ± 8.2 |
Smoking (pack-years) | 33.4 ± 5.7 | 27.9 ± 5.1 | 28.8 ± 12.1 | - |
FEV1 (L) | 1.5 ± 0.4*# | 1.7 ± 0.2*# | 3.2 ± 0.6 | 3.7 ± 0,2 |
FEV1 (% pred.) | 53.3 ± 4.2*# | 57.1 ± 4.7*# | 109.6 ± 5.3 | 117.5 ± 4.1 |
FVC (L) | 2.7 ± 0.5*# | 2.9 ± 0.4*# | 3.0 ± 0.2 | 3.3 ± 0.2 |
FVC (% pred.) | 69.8 ± 9.1*# | 71.7 ± 7.3*# | 108.1 ± 8.2 | 110.0 ± 6.4 |
FEV1/FVC ratio | 50.2 ± 5.9*# | 52.5 ± 6.8*# | 91.0 ± 4.6 | 93.5 ± 1.0 |