SOURCE: Author's analysis of S. M. Asch, E. A. Kerr, J. Keesey, J. L. Adams, C. M. Setodji, S. Malik, and E. A. McGlynn, "Who Is at Greatest Risk for Receiving Poor-Quality Health Care?" New England Journal of Medicine, Vol. 354, No. 11, 2006, pp. 1147-1156.