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.
Graphic of the differences δ between the mean values of 
and the mean values of 
as a function of the hazard ratio, for a Cox proportional hazards model. Mean of 
as a function of the relative risk eβ, for different percentages of censoring pc, for a covariate with Bernoulli ℬ(1/2) or uniform 
[0, 
] distribution, n = 100 and a uniform censoring mechanism.
