As measured by the Index of Concentration at the Extremes in US counties, 2015-2019, graphs show the mean age-adjusted mortality rate (A) and the adjusted mortality rate ratios (B), with the fifth quintile representing the most privileged counties and the first quintile representing the least privileged counties. The fifth quintile (horizontal dashed line) (B) was used as the reference group. Multivariable linear mixed models were clustered at the state level, weighted by county population size, and adjusted for metropolitan status, poverty level, and proportion of the population with non-Hispanic White alone race. Whiskers represent 95% CI.