Fig 1.
Income-related inequalities in diabetes by sex, age, and race/ethnicity among US adults aged ≥ 18 years, 2001–2018.
The concentration index (CI) measures the inequality in diabetes prevalence over the distribution of income. Negative CIs indicate that diabetes was concentrated among lower-income groups, and a larger CI (in absolute value) indicates a greater degree of inequality.
Table 1.
Decompositions of income-related inequalities in diabetes in 2001, 2011, and 2018.
Fig 2.
Relative contributions of determining factors to income-related inequalities in diagnosed diabetes, 2001−2018.
For each year, the length of the sub-bar indicated the numeric value of each factor’s relative contribution to the overall CI, and the sum of numeric values from all factors was equal to the overall CI.
Table 2.
Decomposition of changes in diabetes inequalities during 2001−2011 and 2011−2018.