Table III.
Baseline characteristics of the enrolled patients.
| Factors | YQGB (n=84) | Pb (n=87) |
|---|---|---|
| Age, years | 67.32±1.17 | 65.74±1.15 |
| Course of COPD, years | 16.15±12.80 | 16.85±14.36 |
| Gender, n (%)a | ||
| Male | 52 (61.9) | 58 (66.67) |
| Female | 32 (38.10) | 29 (33.33) |
| Smoking history, n (%)a | ||
| Yes | 53 (63.1) | 60 (68.97) |
| No | 31 (36.9) | 27 (31.03) |
| Higher educationa | ||
| No, n (%) | 66 (79.6) | 80 (77.0) |
| Yes, n (%) | 18 (21.4) | 20 (23.0) |
| Lung function | ||
| FEV1 | 1.31±0.52 | 1.43±0.65 |
| FVC | 2.37±0.78 | 2.43±0.84 |
| FEV1% | 53.26±18.63 | 57.32±22.95 |
| %FVC | 74.45±17.98 | 76.28±21.40 |
| FEV1/FVC | 55.25±11.47 | 57.37±10.73 |
| Life quality | ||
| Body mass index | 24.17±3.50 | 24.90±3.60 |
| CAT | 14.95±7.27 | 14.91±8.07 |
| 6MWD (m) | 387.96±86.06 | 404.89±89.33 |
| MMRC dyspnea score | 1.56±0.77 | 1.56±1.09 |
| BODE index | 2.58±1.77 | 2.49±2.40 |
Data are presented as mean ± standard deviation and analyzed with two independent sample t-tests.
a
Data were analyzed using the χ2 test for contingency table. YQGB, Yiqigubiao pill; Pb, placebo; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 sec; FVC, forced vital capacity; CAT, COPD assessment test; 6MWD, 6-min walking distance; MMRC, Modified Medical Research Council; BODE, body mass index, obstruction, dyspnea and exercise.