Table 1.
Pulmonary function parameters of the subjects enrolled in the study
| COPD
|
Controls
|
|||
|---|---|---|---|---|
| Range | Mean (SD) | Range | Mean (SD) | |
| FEV1 (%) | 24.6–55.2 | 40.2 (8.1) | 77.9–126.9 | 98.5 (12.7) |
| FVC (%) | 21.6–101.2 | 69.5 (19.5) | 74.9–129.0 | 98.7 (12.4) |
| FEV1/FVC | 29.3–62.8 | 43.1 (10.1) | 70.0–90.5 | 76.9 (5.8) |
| Arterial pH | 7.39–7.50 | 7.43 (0.03) | – | – |
| PaO2 (mmHg) | 64.0–84.7 | 71.1 (7.8) | – | – |
| PaCO2 (mmHg) | 33.8–45.1 | 38.1 (2.9) | – | – |
Abbreviations: COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; SD, standard deviation.