Differences among countries in how health care is organized could have implications for health equity. JAMA Associate Editor Karen Joynt Maddox, MD, MPH, and Bruce E. Landon, MD, MBA, MSc, professor of health care policy, Harvard Medical School, discuss whether treatment patterns and outcomes for patients presenting with acute myocardial infarction differ for patients with higher vs lower incomes across 6 countries. Related Content: Differences in Treatment Patterns and Outcomes of Acute Myocardial Infarction for Low- and High-Income Patients in 6 Countries