Table 1 Demographic and clinical characteristics of study participants.
Group | Stable COPD (n = 251) | Control (n = 85) | t/Z/χ2 value | P value |
|---|---|---|---|---|
Age (years) | 64.84 ± 8.33 | 57.25 ± 9.14 | 7.087 | < 0.001 |
Height (cm) | 168.06 ± 6.33 | 168.65 ± 5.65 | -0.761 | 0.447 |
Smoking | 224 (89.24%) | 53 (62.35%) | 31.716 | < 0.001 |
BMI (kg/m2) | 23.33 ± 3.06 | 24.32 ± 2.69 | -2.825 | 0.005 |
6MWD (m) | 530 (490,570) | 600 (570,620) | < 0.001 | |
Handgrip (kg) | 35.48 ± 7.40 | 36.91 ± 4.18 | 2.196 | 0.029 |
IC (L) | 2.49 ± 0.66 | 2.92 ± 0.62 | -5.230 | < 0.001 |
FVC (L) | 3.47 ± 0.88 | 3.95 ± 0.66 | -5.323 | < 0.001 |
FEV1 (L) | 1.90 ± 0.81 | 3.05 ± 0.52 | -15.273 | < 0.001 |
FEV1% (%) | 65.47 ± 24.04 | 98.36 ± 11.73 | -16.610 | < 0.001 |
FEV1/FVC (%) | 53.00 ± 13.84 | 77.32 ± 4.45 | -24.364 | < 0.001 |
FFMI (kg/m2) | 17.34 ± 1.60 | 18.35 ± 1.31 | 5.250 | < 0.001 |
SMM (kg) | 26.92 ± 3.86 | 29.02 ± 3.35 | 4.470 | < 0.001 |
Protein (kg) | 9.58 ± 1.28 | 10.29 ± 1.12 | 4.535 | < 0.001 |
Inorganic salt (kg) | 3.24 ± 0.44 | 3.43 ± 0.41 | 3.421 | 0.001 |
