Characteristics | Patients(n = 567) | Controls (n = 523) |
---|---|---|
Samples origins and | Weifang (n = 424) 195/229 | SPH (n = 308) 217/91 |
Sex distribution(male/female) | Qilu Hospital(n = 143) 58/85 | Qilu Hospital (n = 215) 143/72 |
Age: mean (range) | 41.36 (4–77) | 44.18 (18–79) |
FEV1, % predicted | 56.48 ± 16.8 | 85.98 ± 12.2 |
Changes in FEV1 by bronchodilator, % | 28.28 ± 14.6 | 4.38 ± 3.9 |
Total frequency of females | 55.4% | 33.3% |
Total frequency of males | 44.6% | 66.6% |