Table 3.
Comparison of pulmonary function between the comorbidity group and COPD group
| Variable | Comorbidity Group (n=133) | COPD Group (n=91) | Z/t Value | P-Value |
|---|---|---|---|---|
| FEV1 (L) | 1.19 (1.04, 1.34) | 1.48 (1.33, 1.80) | -8.399 | <0.001 |
| FVC (L) | 2.36 (2.13, 2.70) | 2.53 (2.22, 2.92) | -2.659 | 0.008 |
| FEV1/FVC (%) | 0.50 (0.42, 0.61) | 0.63 (0.54, 0.68) | -6.047 | <0.001 |
| RV (L) | 2.28 (0.46) | 2.75 (0.42) | -7.989 | <0.001 |
| TLC (L) | 5.32 (4.53, 6.05) | 5.11 (4.48, 5.45) | 1.742 | 0.082 |
| RV/TLC (%) | 0.43 (0.37, 0.50) | 0.54 (0.50, 0.60) | -8.325 | <0.001 |
Note: FEV1: Forced Expiratory Volume in 1 second, FVC: Forced Vital Capacity, FEV1/FVC%: Ratio of FEV1 to FVC, RV: Residual Volume, TLC: Total Lung Capacity, RV/TLC%: Ratio of Residual Volume to Total Lung Capacity.