Table 1.
Patient Baseline Characteristics
| Total N=200 | ||
|---|---|---|
| COPD n=100 | Healthy Volunteers n=100 | |
| Mean (SD) Age, years | 70 (7) | 31 (11) |
| Sex, n (%) | ||
| Female | 21 (21) | 60 (60) |
| Male | 79 (79) | 40 (40) |
| Mean (SD) Weight, kg | 83.2 (17.0) | 73.2 (14.6) |
| Mean (SD) Height, cm | 171.0 (7.7) | 171.8 (8.9) |
| Mean (SD) BMI | 28.4 (5.5) | 24.8 (4.6) |
| Nicotine user, n (%) | ||
| Ex-user | 53 (53) | 15 (15) |
| Never used | 4 (4) | 74 (74) |
| User | 43 (43) | 11 (11) |
| Mean FEV1, L (min–max) | 1.58 (0.51–3.77) | 3.70 (2.41–5.95) |
| Mean FEV1, % predicted (min–max) | 55 (16–96) | 97 (81–122) |
| Mean FEV1/FVC (min–max) | 0.50 (0.20–0.74) | 81.7 (69.0–96.0) |
| Mean FVC (min–max) | 3.1 (1.2–5.9) L | 4.6 (3.1–7.1) |
Abbreviations: BMI, body mass index; FEV1, forced expiratory volume in one second; SD, standard deviation.