Table 2.
Adjusted decline rate of lung function according to the presence of emphysema
| Total* | FEV1
|
FVC
|
FEV1/FVC
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mL/yr | SE | Mean difference | P-value | mL/yr | SE | Mean difference | P-value | mL/yr | SE | Mean difference | P-value | |
| Emphysema (−) (n=543) | −17.5 | 2.6 | 8.8 (−2.7, 20.3) | 0.14 | −18.8 | 2.4 | 15.2 (2.6, 27.8) | 0.02 | −0.45 | 0.05 | 0.12 (−0.2, 0.4) | 0.35 |
| Emphysema (+) (n=85) | −26.3 | 5.7 | −33.9 | 6.0 | −0.34 | 0.11 | ||||||
Note:
*
Adjusted by age, sex, height, BMI, current smoking status, and baseline PFT.
Abbreviations: FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; yr, year; SE, standard error; BMI, body mass index; PFT, pulmonary function test.