Table 1.
Baseline characteristics between two groups.
| Parameters | CG (n = 46) | EG (n = 50) | χ2 or t values | P values |
| Gender, male (%) | 32 (69.56) | 30 (60.00) | 0.479 | .489 |
| Education levels | ||||
| Junior high school and below | 4 (8.69) | 6 (12.00) | 0.327 | .849 |
| High school and specialist | 26 (56.52) | 30 (60.00) | ||
| Bachelor degree or above | 16 (34.78) | 14 (28.00) | ||
| Monthly salary, RMB | ||||
| <2000 | 6 (13.04) | 8 (16.00) | 0.671 | .715 |
| 2000∼5000 | 22 (47.82) | 28 (56.00) | ||
| >5000 | 18 (39.13) | 14 (28.00) | ||
| Payment of medical treatment | ||||
| Self-pay | 4 (8.69) | 6 (12.00) | 0.814 | .846 |
| Employee medical insurance | 14 (30.43) | 20 (40.00) | ||
| Cooperative medical care | 26 (56.52) | 22 (44.00) | ||
| other | 2 (4.34) | 2 (4.00) | ||
| Coronary lesion | ||||
| Mono-vascular lesion | 4 (8.69) | 6 (12.00) | 0.169 | .918 |
| Bifurcation Lesions | 18 (39.14) | 20 (40.00) | ||
| Trifurcation Lesions | 24 (52.17) | 24 (48.00) | ||
| Age | 45.30 ± 7.31 | 43.76 ± 6.57 | 0.77 | .45 |
| APACHE II | 12.3 ± 51.89 | 11.68 ± 1.61 | 1.32 | .19 |
| NYHA classification | ||||
| II | 26 (56.52) | 30 (60.00) | 0.119 | .730 |
| III | 20 (43.48) | 20 (40.00) | ||
| Degree of pulmonary ventilatory dysfunction | ||||
| Mild | 26 (56.52) | 28 (56.00) | 0.041 | .979 |
| Moderate | 14 (30.43) | 16 (32.00) | ||
| Severe | 6 (13.05) | 6 (12.00) | ||
NYHA = New York Heart Association and APACHE II, a severity-of-disease classification system.