Figure 1.

Crude death-censored graft failure rates are higher in young female than young male recipients. When the donor is male (A), sex differences are prominent among recipients <25 years old. When the donor is female (B), failure rates are slightly higher in females than males <25 years and slightly lower in females than males ≥45 years. Because age was treated as a time-varying variable, individuals could contribute person-time to multiple current-age intervals. Rates are provided in tabular form in the Supplemental Material. p-years, person years.