Table I.
Demographic data of the study patient population.
| Demographics | Asymptomatic | Symptomatic | Treated |
|---|---|---|---|
| Subjects, n | 138 | 170 | 40 |
| Age, years | 35±9 | 38±11 | 39±10 |
| Male/female, n | 79/59 | 45/125 | 12/28 |
| Non-smokers/smokers | 106/32 | 145/25 | 36/4 |
| FVC,% predicated | 101±15 | 105±16 | 105±16 |
| FEV1,% predicated | 99±17 | 100±15 | 100±16 |
| FEV1/FVC | 81±9 | 81±7 | 82±8 |
| VC,% predicated | 102±16 | 106±16 | 108±13 |
| TLC,% predicated | 97±11 | 96±14 | 100±12 |
| DLCO,% predicated | 88±12 | 86±15 | 85±16 |
Data are presented as mean±standard deviation, and numbers (n).
FVC = forced vital capacity; FEV1=forced expiratory volume in one second; VC = vital capacity; TLC = total lung capacity; DLCO=diffusing capacity of carbon monoxide.