Table 1 Description of the studied population
From: Association of ADAM33 gene polymorphisms with COPD in a northeastern Chinese population
Characteristic | CASE | CONTROL |
|---|---|---|
Number of patients | 312 | 319 |
Age (years) | 60.5 (7.8) | 61.5 (8.1) |
Male: Female | 186:126 | 192:127 |
Pack years of smoking | 35.46 (15.9) | 32.54 (12.7) |
FEV1 (% predicted) | 52.5 (8.6) | 91.5 (9.6) |
FEV1/FVC (%) | 47.5 (7.6) | 90.5 (11.6) |
Postbd FEV1 (% predicted) | 58.5 (9.6) | 93.5 (10.5) |
Postbd FEV1/FVC (%) | 49.2 (8.5) | 91.5 (11.8) |