n...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Göran Broström
Sent: Tuesday, October 20, 2009 10:07 AM
To: spencerg
Cc: r-help@r-project.org; Terry Therneau
Subject: Re: [R] AFT-model with time-dependent covariates
Sorry for being late in responding to this thread, but I
Sorry for being late in responding to this thread, but I was made
aware of it only two weeks ago. In my package 'eha' there is a
function 'aftreg', which performs what is asked for, given that the
time-varying covariates are step functions of time and that the
observation period for each individual
To see what's available in other packages, try the following:
library(RSiteSearch)
AFT <- RSiteSearch.function('AFT model')
summary(AFT) # 24 help files found in 8 different packages
HTML(AFT) # opens a table with 24 rows in a web browser.
There may be nothing here that will help you,
The coding for an AFT model with time-dependent covariates will be very hard,
and I don't know of anyone who has done it. (But I don't keep watch of other
survival packages, so something might be there).
In a Cox model, a subject's risk depends only on the current value of his/her
covariat
Dear R-community,
Dear Prof. Therneau,
I would like to fit an AFT-model with time-dependent covariates and
right-censored data.
Searching the mailing list for information on the subject, I found some old
posts which said it didn't work back then.
My questions:
(1) Has this kind of fitting al
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