Demographic characteristics of patients with COPD included in the study
| Patients with COPD (N=15) | ||
|---|---|---|
| Gender | ||
| Male/female | 11/4 | |
| Age (years) | ||
| Mean (SD) | 62.9 (8.9) | |
| Range | 48.0–76.0 | |
| Smoking classification | ||
| Smoker/ex-smoker | 8/7 | |
| Race | ||
| White/Asian/other | 13/1/1 | |
| Weight (kg) | ||
| Mean (SD) | 76.5 (12.1) | |
| Range | 55.0–97.1 | |
| Body mass index (kg/m2) | ||
| Mean (SD) | 27.0 (4.0) | |
| Range | 21.2–34.0 | |
| FEV1(L) | % predicted | |
| Prebronchodilator | ||
| Mean (SD) | 1.56 (0.38) | 55.6 (12.0) |
| Range | 1.07–2.48 | 35.2–78.6 |
| Postbronchodilator | ||
| Mean (SD) | 1.78 (0.42) | 63.0 (11.8) |
| Range | 1.16–2.63 | 39.6–79.6 |
| FEV1/FVC (%) | ||
| Prebronchodilator | ||
| Mean (SD) | 0.50 (0.09) | |
| Range | 0.36–0.72 | |
| Postbronchodilator | ||
| Mean (SD) | 0.51 (0.09) | |
| Range | 0.33–0.68 | |
| FVC(L) | ||
| Prebronchodilator | ||
| Mean (SD) | 3.13 (0.68) | |
| Range | 2.16–4.25 | |
| Postbronchodilator | ||
| Mean (SD) | 3.45 (0.65) | |
| Range | 2.36–4.47 | |
COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; N, number.