|
Characteristics of subjects |
||||
| 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 |
|
Values are mean of percentage ± SEM. *: p < 0.05 compared to healthy never-smokers; #: p < 0.05 compared to 'healthy' smokers | ||||
Babusyte et al. Respiratory Research 2007 8:81 doi:10.1186/1465-9921-8-81 |
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