require(survival)
data(cancer,package="survival")
fit=coxph(Surv(time,status)~rx+sex+age,data=colon)
fit=coxph(Surv(time,status)~rx+age+strata(sex),data=colon)
fit=survreg(Surv(time, status) ~ ph.ecog + age + sex, data=lung, dist="weibull")
fit2newdata(fit)
fit2newdata(fit,pred.values=list(sex=0,age=58))
fit2newdata(fit,pred.values=list(age=c(20,40,60,80),sex=2,ph.ecog=3))
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