| AMI | Acute Myocardial Infarction |
| CI | Confidence Interval |
| ECI | Elixhauser Comorbidity Index |
| HHI | Herfindahl-Hirschman Index |
| ICD-9 | The International Classification of Disease, Ninth Revision |
| ICD-10 | The International Classification of Disease, Tenth Revision |
| NCMS | The Rural New Cooperative Medical Scheme |
| OR | Odds Ratio |
| UEBMI | The Urban Employee-based Basic Medical Insurance Scheme |
| URBMI | The Urban Resident-based Basic Medical Insurance Scheme |
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