Kim EJ, et al. - Researchers performed this retrospective study to investigate the link between ambulatory care utilizations and inpatient acute myocardial infarction (AMI) mortality, using a stratified national sample of Medicare fee-for-service enrollees aged 66 years and older. Both the number of ambulatory visits and the presence of ambulatory cardiac examinations were measured. Inpatient AMI mortality was assessed as the primary outcome. Adjusting for patient- and area-level demographic, geographical, and clinical features, the link between ambulatory care utilization and the main patient outcomes was estimated employing multivariate logistic regression models. Lower rates of ambulatory care visits were reported in Hispanics and Asians among Medicare fee-for-service enrollees, and higher odds of hospitalization for AMI were observed in all minority groups. Findings revealed the link of ambulatory care utilization, including both ambulatory clinic visits and outpatient cardiac examinations, with AMI mortality.