Dear R-users, I am looking for a function designed to handle parametric proportional hazard models with a piecewise constant baseline hazard (i.e. dummies for annual intervals) and time-dependent covariates since I'm especially interested about the effect of those covariates on the baseline hazard. I tried survreg() but this doesn't seem to work since my data looks like this id/ start/ stop/ censoring/ covariates 1/ 0/ 5/ 0/ ... 1/ 5/ 8/ 1/ 2/ 0/ 4/ 0/ and survreg(Surv(start,stop,censoring)~covariates,...) always returns 'invalid survival type' (specifying the type="right" returns "wrong number of args..."). Am I missing something or is there a function that can handle this kind of data. Thanks Daniel --
exponential proportional hazard model
1 message · Daniel Gutknecht