Re: [R] AFT-model with time-varying covariates and left-truncation

2010-02-01 Thread Philipp Rappold
Thanks for your super-fast reply. I realized you're totally right: My problem is not left truncation but missing data of time-varying covariates. In my special case, two conditions are given by study design: (1) A lot of subjects are missing all of their (time-varying) covariates for a certai

Re: [R] AFT-model with time-varying covariates and left-truncation

2010-01-29 Thread Göran Broström
On Thu, Jan 28, 2010 at 2:32 PM, Philipp Rappold wrote: > Dear Prof. Broström, > Dear R-mailinglist, > > first of all thanks a lot for your great effort to incorporate time-varying > covariates into aftreg. It works like a charm so far and I'll update you > with detailled benchmarks as soon as I h

[R] AFT-model with time-varying covariates and left-truncation

2010-01-28 Thread Philipp Rappold
Dear Prof. Broström, Dear R-mailinglist, first of all thanks a lot for your great effort to incorporate time-varying covariates into aftreg. It works like a charm so far and I'll update you with detailled benchmarks as soon as I have them. I have one more questions regarding Accelerated Failu