Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A, Concordance indices of risk models with patient survival as outcome over 5 years' time. B, Concordance indices of risk models with non–death-censored graft survival as outcome over 5 years' time. C, Concordance indices of risk models with death-censored graft survival as outcome over 5 years' time.
