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. 2021 Sep 3;13:791–800. doi: 10.2147/CLEP.S311813

Table 2.

Univariate Indices of Inequality in Quality of Care

2004–08 2009–14 Absolute Difference 95% CI Relative Difference
N 52,767 58,081
ACII 0.648 0.462 −0.187 (−0.188; −0.185) −29%
ARCII 0.245 0.156 −0.089 (−0.090; −0.088) −36%
SRCII* 0.480 0.447 −0.033 (−0.035; −0.031) −7%

Note: *Negative operational signs are ignored.

Abbreviations: CI, confidence interval; ACII, absolute concentration index; ARCII, attainment relative concentration index; SRCII, shortfall relative concentration index.