Table 1 Clinical and demographic characteristics of patients and controls
Characteristics | Patients | Controls |
|---|---|---|
No. of subjects | 710 | 656 |
Age, mean (range), years | 28.7 (22-37) | 29.1 (20-42) |
Sex (male/female) | 345/365 | 310/346 |
FVC (% predicted), mean±SD | 67.7±17.2 | 80.6±15.4 |
FEV1 (% predicted), mean±SD | 56.4±16.8 | 87.9±12.2 |
% change in FEV1 by bronchodilator, mean±SD | 28.2±14.6 | 4.3±3.9 |