Figure 3.

Racial disparities in quality of care by quartile of provider group performance for white beneficiaries among provider groups sufficiently large for ACO programs. For each quality measure, provider groups sufficiently large to participate in ACO programs (medium-sized and large groups) were categorized into quartiles according to their performance for white beneficiaries. For each quartile, the adjusted racial disparity (absolute value of the difference between black and white beneficiaries) is shown for each of the following measures: provision of all three diabetes services (hemoglobin A_1c testing, LDL cholesterol testing, and retinal examination) to beneficiaries with diabetes; LDL cholesterol testing for patients with cardiovascular disease; hospitalization for an ACSC related to diabetes or cardiovascular disease; and hospitalization for any ACSC. For each quality measure, the correlation between performance for white beneficiaries and the black–white difference in performance is presented with 95 % confidence intervals and two-sided p-values. Lower rates of hospitalization of white beneficiaries for ACSCs related to diabetes or cardiovascular disease were correlated with smaller black–white differences. Correlations between quality for white beneficiaries and black–white difference were not statistically significant for other quality measures.