COPD | Controls | |
---|---|---|
FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; Pao2, Paco2, arterial oxygen and carbon dioxide tensions. | ||
Data are expressed as mean (SE). | ||
*p<0.01 v control subjects. | ||
Age (years) | 69 (2) | 68 (2) |
Sex (M/F) | 12/0 | 12/0 |
Pack years | 55 (6) | 44 (5) |
Smoking (ex/current) | 7/5 | 8/4 |
FEV1/FVC (%) | 67 (2)* | 77 (2) |
FEV1 (% predicted) | 75 (5)* | 98 (3) |
Pao2 (kPa) | 11.3 (0.4) | 11.5 (0.4) |
Paco2 (kPa) | 5.2 (0.3) | 4.1 (0.3) |