| CHD | Coronary Heart Disease |
| CVD | Cardiovascular Diseases |
| HA | Heart Attack |
| IHD | Ischemic Heart Disease |
| MI | Myocardial Infarction |
| HAS | Heart attack Symptom |
| HASs | Heart Attack Symptoms |
| OR | Odds Ratio |
| CL | Confidence Interval |
| KW | Kruskal-Wallis Test |
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