Table 2.
Characteristics of patients at baseline
| Patient characteristics at baseline | Control (n = 25) | Intervention (n = 17) |
|---|---|---|
| Gender, m (%) | 12 (48) | 9 (53) |
| Age in years, mean (SD) | 67 (9) | 70 (7) |
| BMI, mean (SD) | 25 (7) | 27 (5) |
| Active smoker, yes (%) | 8 (32) | 8 (47) |
| Packyears, mean (SD) | 46 (22) | 53 (22) |
| N of cigarettes per day, mean (SD) | 15 (12) | 7 (3) |
| Years since stopped smoking, mean (SD) | 9 (8) | 12 (10) |
| N of exacerbations in last 12 months, mean (SD) | 0.4 (0.7) | 0.3 (0.4) |
| 6MWD, m, mean (SD) | 448 (72) | 470 (90) |
| FVC, l, mean (SD) | 2.6 (0.8) | 2.7 (0.7) |
| FVC %, mean (SD) | 77.1 (14) | 85.5 (26) |
| FEV1, l, mean (SD) | 1.1 (0.4) | 1.3 (0.4) |
| FEV1, %, mean (SD) | 45.6 (16) | 52.5 (20) |
| FEV1_FVC, mean (SD) | 53.6 (16) | 56.7 (14) |
n, number; SD, standard deviation; %, percentage; BMI, body mass index; 6MWD, six minutes walking distance; m, meter; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; l, volume