Whole cohort | Patients with CT scan | |
---|---|---|
Total, n | 505 | 418 |
Age, years: mean (SD) | 55.26 (13.6) | 57.95 (12.2) |
Male, n (%) | 270 (53.5%) | 218 (52.2%) |
Smoking, n (%) | ||
Current | 6 (1.2%) | 6 (1.4%) |
Ex-smoker | 290 (57.4%) | 249 (59.6%) |
Never | 208 (41.2%) | 162 (38.8%) |
Unknown | 1 (0.2%) | 1(0.2%) |
Pack years: Mean (SD) | 18.70 (13.75) | 18.77 (13.80) |
Post-bronchodilator FEV1%: Mean (SD) | 62.56% (29.54) | 61.42% (29.14) |
Kco %: Mean (SD) | 67.95% (22.91) | 66.37% (22.92) |