Hello,   I'm conducting research on repeated events in teh framework of survival analysis and I'm interested in parametric hazard function rather than the default semi-parametric structures. In particular, I'm trying to estimate a parametric proportional hazard with time dependent covariates. I know pretty well the proc phreg option and other related procedures, however I couldn't find the right one for this model.  I would appreciate any help and guldance in how or what should I use in order to be able to run this model.    P.S I'm familiar with other programming/compuational (statistical and mathematical) softwares, so feel free to suggest any solution that you can think off.   Thank you in advance!  ... View more