Kaplan–Meier estimates for overall graft survival, death-censored graft survival, and composite event-free survival.

(a), (b), and (c) show comparisons of survival according to the mean serum uric acid (UA) level within the first year after transplantation (1-YR analysis); (d), (e), and (f) show comparisons of survival according to the mean serum UA level within 1–5 years after transplantation (5-YR analysis). The composite event represents the sum of return to dialysis, retransplantation, death from graft dysfunction, and eGFR decline of more than 40% from the baseline level, which was measured at 1 year or 5 years after transplantation (for the 1-YR and 5-YR analyses, respectively). The log-rank P-values for the low- and high-UA groups were estimated using the normal-UA group as reference. eGFR, estimated glomerular filtration rate.