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Plots martingale residuals of a Cox model against fitted values, to check for log-linearity of covariates.
cox.resid(model)
a coxph model.
coxph
Maxime HERVE <maxime.herve@univ-rennes1.fr>, based on an idea of John Fox.
Fox, J. 2002 Cox Proportional-Hazards Regression for Survival Data.
# 'kidney' dataset of package 'survival' require(survival) data(kidney) model <- coxph(Surv(time,status)~age+factor(sex),data=kidney) cox.resid(model)
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