Table 1 Clinical and lung function characteristics of all patients
From: CD147 increases mucus secretion induced by cigarette smoke in COPD
| Â | Non-smokers | Smokers without COPD | Smokers with COPD |
|---|---|---|---|
Subject (n) | 14 | 14 | 14 |
Age (years) | 61.5 ± 4.7 | 60.7 ± 5.0 | 62.1 ± 3.9 |
Sex (male/female) | 10/4 | 13/1 | 11/3 |
Smoking history (pack-years) | 0 | 52.8 ± 8.6 | 60.3 ± 7.4a |
Smoking years | 0 | 26.9 ± 1.5 | 38.8 ± 0.8b |
FEV1 (% predicted) | 89.8 ± 3.8 | 87.3 ± 4.1 | 60 ± 5.8c |
FEV1/FVC (%) | 85.3 ± 5.9 | 83 ± 4.9 | 62.8 ± 5.2d |
GOLD stage | |||
 1 | – | – | 0 |
 2 | – | – | 12 |
 3 | – | – | 2 |
 4 | – | – | 0 |