1 From the Department of Medical Ethics and Health Policy (A.L.S., S.D.H.) and the Behavioral Economics to Transform Trial Enrollment Representativeness (BETTER) Center (A.A.M., S.D.H.), Perelman School of Medicine, University of Pennsylvania, and the Center for Health Equity Research and Promotion, Department of Veterans Affairs (A.L.S.) - both in Philadelphia; the Harvard Kennedy School of Government and the National Bureau of Economic Research - both in Cambridge, MA (M.A.); and the Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta (A.A.M.).