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| Control group(n = 39) | Dil group(n = 40) | P value | |
| Rehospitalization for chest pain | 5 | 2 | 0.263 |
| Progress in coronary heart disease | 0 | 0 | |
| Myocardial infarction, malignant arrhythmia or cardiac death | 0 | 0 |
Fisher’s exact test (rate comparison) was performed to compare proportions between control group and Dil group.
