Baseline characteristics of study patients
| Mean (SD) | |
|---|---|
| BD = bronchodilator trial; FEV1 = forced expiratory volume in 1 second; VC = vital capacity; Tlco = carbon monoxide transfer factor; TLC = total lung capacity; RV = residual volume; Pao2, Paco2 = arterial oxygen and carbon dioxide tensions; ISW = incremental shuttle walk. | |
| Sex (M:F) | 10:6 |
| Age (years) | 68.1 (7.6) |
| Smoking history (pack years) | 35.3 (13.8) |
| Pre- BD FEV1 (l) | 0.76 (0.17) |
| Post-BD FEV1 (l) | 0.77 (0.15) |
| FEV1 (% pred) | 31.1 (3.9) |
| FEV1/VC (%) | 32.2 (8.1) |
| Tlco (% pred) | 38.8 (14.8) |
| TLC (% pred) | 115 (14.5) |
| RV (% pred) | 139 (14.8) |
| Pao2 (kPa) | 8.7 (0.9) |
| Paco2 (kPa) | 5.3 (0.6) |
| ISW distance (m) | 275 (75) |