Table 1 Patient Characteristics
| Â | Non smokers | Smokers without COPD | COPD |
|---|---|---|---|
N | 4 | 8 | 12 |
Age (yr) | 63 ± 10 | 67 ± 9 | 66 ± 6 |
Sex (F:M) | 1:3 | 2:6 | 0:15 |
Smoking status (current/ex/never) | 0/0/4 | 2/6/0 | 1/11/0 |
Pack-year | 0 ± 0 | 16 ± 22 | 40 ± 23 |
BMI (kg/m2) | 23 ± 2 | 30 ± 7 | 25 ± 5 |
FEV1 (L) | 3.00 ± 0.91 | 2.91 ± 0.41 | 1.05 ± 0.37a, b |
FEV (%predicted) | 104 ± 15 | 107 ± 20 | 33 ± 11 a, b |
RV %predicted (%) | ND | ND | 207 ± 40 |
KCO %predicted (%) | ND | ND | 52 ± 19 |
MVC (kg) | 40 ± 19 | 41 ± 13 | 34 ± 10 |
PaO2 (kPa) | ND | ND | 8.7 ± 2.2 |
Systemic Steroids | NA | NA | 0 |
ICS | NA | NA | 5 |