1. From Kaiser Permanente Washington Health Research Institute (K.Y.) and the Comparative Health Outcomes, Policy, and Economics (CHOICE) Institute, University of Washington (K.Y., D.B., A.B.), Seattle; the Department of Health Policy, Vanderbilt University School of Medicine, and Vanderbilt–Ingram Cancer Center, Nashville (S.B.D.); and the National Bureau of Economic Research, Cambridge, MA (A.B.).