Comparison of mean (SD) demographic factors in normal subjects, in the 14 oldest normal subjects, and in patients with cryptogenic fibrosing alveolitis (CFA)
| Normal subjects (n=96) | Older normal subjects (n=14) | CFA (n=15) | |
|---|---|---|---|
| Age (years) | 38 (12) | 57 (4) | 65 (6) |
| % Male | 34 | 29 | 73 |
| % predicted FEV1 | 107 (14) | 99 (13) | 82 (11) |
| % predicted FVC | 100 (13) | 90 (9) | 75 (14) |
| Tlco | – | – | 57 (20) |
| VAS cough | – | – | 3.0 (1.9) |
FEV1 = forced expiratory volume in one second; FVC = forced vital capacity; Tlco = carbon monoxide transfer factor; VAS = visual analogue score.