A myocardial infarction (also referred to as a heart attack) is a time-sensitive condition that occurs when a part of the heart muscle does not receive enough blood. Very little is known about variances in hospital-based outcomes for this condition along the urban-rural continuum and among diverse sub-populations in the U.S. Researchers of this project will examine hospitalization trends over the 2015-2019 study period and explore the role of income level/poverty, insurance status, census region, race/ethnicity, and the nature of patients' residence in predicting hospitalizations for acute myocardial infarctions.