States with the largest percentage of white residents have the highest Medicare quality rankings. Percentage of population that is non-Hispanic white according to 2000 census by Medicare Quality Ranking for 2000–2001 Note: Medicare rankings are shown for the top 12 and the bottom 12 states only. Sources: S. F. Jencks et al., “Change in the Quality of Care Delivered to Medicare Beneficiaries, 1998–1999 to 2000–2001,” Journal of the American Medical Association, Jan. 15, 2003 289(3):305–12; United States Census Bureau, Census 2000.