Table 1.
Study population characteristics
| No emphysema | Emphysema | |
|---|---|---|
| Patients, n |
223 |
251 |
| COPD, absent/present |
124/99 |
14/237 |
| Sex, M/F |
178/45 |
192/59 |
| Age, years |
62 (58 - 67) |
65 (59 - 74) |
| Smoking, pack yr. |
40 (30 - 53) |
48 (34 - 62) |
| BMI, kg/m2 |
27 (±4) |
24 (±5) |
| FEV1, %predicted |
91 (±25) |
52 (±26) |
| FVC, %predicted |
103 (±20) |
88 (±24) |
| FEV1/FVC |
0.68 (±0.11) |
0.45 (±0.14) |
| KCO, %predicted |
96 (±17) |
69 (±21) |
| DL,CO, %predicted |
82 (±17) |
50 (±19) |
| Emphysema scores, % | 0 | 32 (7 - 57) |
Definition of abbreviations: BMI Body mass index, COPD Chronic obstructive pulmonary disease, DL,CO Carbon monoxide diffusing capacity, F Female, FEV1 Forced expiratory volume in one second, FVC Forced vital capacity, KCO Carbon monoxide transfer coefficient, M Male, Values are means ± SD; Emphysema score, age and smoking values are median and IQR.