Table 1.
Patient’s baseline characteristics
| Characteristics | Control group | Stable COPD group | AECOPD group | P-value |
|---|---|---|---|---|
| Age (years)§ | 63 (4) | 63 (5) | 63 (3) | 0.829 |
| BMI (kg/m2), mean ± SD¥ | 24.9±3.8 | 24.2±5.7 | 25.1±4.8 | 0.824 |
| History of falls (%) | 26 | 39 | 43 | <0.001* |
| FVC (L)§ | 4.75 (0.65) | 2.68 (0.98) | 2.34 (0.61) | <0.001* |
| FVC (%)§ | 101 (10) | 65.5 (80) | 66 (4) | <0.001* |
| FEV1 (L)§ | 3.57 (0.65) | 0.79 (0.36) | 0.71 (0.31) | <0.001* |
| FEV1 (%)§ | 100.5 (12) | 27.5 (7) | 20.0 (10) | <0.001* |
| FEV1/FVC§ | 76 (10) | 27.6 (8) | 31.8 (10) | <0.001* |
| PaO2 (mmHg), mean ± SD¥ | Not performed | 70.1±9.1 | 59.1±8.9 | <0.001* |
Notes:
§
Variables without Gaussian distribution; P-value was calculated using Kruskal–Wallis test.
¥
Variables with Gaussian distribution; P-value was calculated using one-way ANOVA test. Data is presented as median (interquartile range), unless otherwise noted.
*
Differences are significant.
Abbreviations: AECOPD, acute exacerbation of COPD; ANOVA, analysis of variance; BMI, body mass index; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second.