Baseline characteristics of study patients
| Absolute* | % predicted | |
|---|---|---|
| *Mean (SD) values. | ||
| FEV1 = forced expiratory volume in 1 second; Kco = carbon monoxide transfer coefficient; SGRQ = St George’s Respiratory Questionnaire. | ||
| Sex (M/F) | 10/12 | – |
| Age (years) | 40.7 (9.2) | – |
| Body mass index (kg/m2) | 25.2 (5.0) | – |
| Inhaled steroids (yes/no) | 14/8 | – |
| Smoking status (current/ex/never) | 5/14/3 | |
| Smoking history (pack years) | 14.2 (12) | |
| FEV1 (l) | 1.93 (1.3) | 56.0 (31.9) |
| Kco (mmol/min/kPa/l) | 1.03 (0.4) | 61.4 (23.6) |
| SGRQ total score | 32.4 (20.1) | – |
| Lung density (15th percentile point) (HU) | –927.9 (44.2) | – |