Table 2.

Longitudinal change in the adjusted relative incidence of living kidney donation 2005 and 2015 in women and men, stratified by median household income

Median Household IncomeWomenMen
IRR (95% CI)IRR (95% CI)
All0.95 (0.84 to 1.07)0.75 (0.68 to 0.83)a
Q1 (<$39,287)0.73 (0.60 to 0.87)a0.59 (0.52 to 0.68)a
Q2 ($39,287–$49,120)0.84 (0.72 to 0.97)a0.60 (0.53 to 0.68)a
Q3 ($49,121–$61,902)0.95 (0.84 to 1.09)0.71 (0.60 to 0.84)a
Q4 (>$61,902)1.11 (0.96 to 1.28)0.96 (0.86 to 1.07)
  • IRR refers to the relative incidence of living kidney donation in 2015 relative to 2005, on the basis of a multilevel Poisson regression model adjusted for donor- and population-level age, race, ESRD rate standardized for race and age, and RUCA, clustered by state of residence. For example, men in the lowest income quintile (Q1) had a 41% decline in living donation between 2005 and 2015, with an IRR of 0.59.

  • a P<0.05.