Subjects n | 160 | 249 | |
Age | 62.3±6.6 | 64.2±7.0 | <0.01 |
Body composition | | | |
BMI kg·m−2 | 24.9±6.2 | 25.7±4.9 | 0.16 |
FMI kg·m−2 | 10.1±4.3 | 7.3±2.6 | <0.01 |
FFMI kg·m−2 | 14.8±2.4 | 18.4±3.3 | <0.01 |
Patients with pathologically low FFMI¶ | 31.0 | 27.5 | 0.45 |
Smoking habits | | | 0.57 |
Ex-smoker | 55.0 | 57.8 | |
Current smoker | 45.0 | 42.2 | |
FEV1 % pred | 50.4±13.9 | 47.8±14.4 | 0.08 |
Hypoxaemia Pa,O2 <8.0 kPa+ | | | 0.31 |
No | 84.8 | 15.2 | |
Yes | 88.4 | 11.6 | |
Daily use of inhaled steroids | 75.0 | 64.7 | 0.03 |
Charlson Comorbidity Index | | | 0.01 |
1 (COPD only) | 63.1 | 52.2 | |
2 | 25.0 | 23.7 | |
3 | 8.8 | 14.5 | |
4–6 | 3.1 | 9.6 | |
Inflammatory markers | | | |
CRP μg·mL−1 | 8.9±12.5 | 7.7±10.8 | 0.78 |
sTNF-R1 pg·mL−1 | 699±219 | 758±250 | 0.01 |
OPG ng·mL−1 | 6.0±2.1 | 5.7±2.3 | 0.16 |