1. From the Center for Clinical and Genetic Economics (S.W.G., K.A.S.), Duke Clinical Research Institute (M.T.R., E.M.O., E.D.P.), and the Department of Medicine (M.T.R., E.M.O., E.D.P., K.A.S.), Duke University School of Medicine, and The Fuqua School of Business (S.W.G., W.B., M.M., R.S., K.A.S.), Duke University, Durham, NC; Press Ganey Associates (R.J.W.), South Bend, Ind; and the Department of Emergency Medicine (S.W.G.), University of North Carolina School of Medicine, Chapel Hill, NC.