search for: brettest1

...Using survfit (see input data below) I computed the predicted survivor function for a Cox model, but I have been unable to figure out how to estimate a 'daily' survival rate for an average individual? Should I be looking at survexp? Any suggestions would be appreciated. Thanks, Bret brettest1<-coxph(Surv(Entry, Exit, Fate)~Sex , data=mydat) brettest1 coef exp(coef) se(coef) z p Sex -0.503 0.605 0.524 -0.96 0.34 Likelihood ratio test=0.92 on 1 df, p=0.337 n= 19 > survfit(brettest1)$surv [1] 0.9502716 0.9010356 0.8508737 0.7996929 0.7473818 0.6957615 0.58...