Clinical characteristics of study subjects
| Group | Sex (M/F) | Age | Smoking(pack years) | FEV1(% predicted) | FEV1/FVC(%) | Steroid treatment |
|---|---|---|---|---|---|---|
| Data shown as mean (SD) values. | ||||||
| COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 second, FVC, forced vital capacity. | ||||||
| Non-COPD | 10/4 | 64 (3.7) | 42 (7.7) | 101 (3.3) | 0.72 (0.02) | None |
| COPD | 14/0 | 64 (2.3) | 44 (0.8) | 63 (2) | 0.54 (0.02) | 4 |
| p value | 0.84 | 0.82 | <0.001 | <0.001 | ||