Hazard ratios for cause-specific mortality and income, ages 18–64, NHANES, 1988–2001. Models control for age and race/ethnicity, marital status, occupational category and education (and income is adjusted for family size), and the population is restricted to individuals who did not die within one year of follow-up, retire early due to health reasons, change jobs due to health reasons, or change to part-time work due to health reasons. A hazard ratio of 1 is equivalent to the average risk of mortality across the income distribution. The labels of income level (in 1991 dollars) on the X-axis denote the family size equivalized US poverty line ($6,270) and the US equivalized median income ($20,190) as external standards of comparison. Dashed lines show 95% confidence intervals of the hazard ratio.
Rehkopf et al. BMC Public Health 2008 8:383 doi:10.1186/1471-2458-8-383