Re: [R] Survival dummy variables and some questions

From: Stephen <szlevine_at_nana.co.il>
Date: Wed 20 Jul 2005 - 02:11:15 EST

Thanks For pointing that out. S ----- Original Message ----- From: "Adaikalavan Ramasamy" To: "Stephen" Cc: "Frank E Harrell Jr" ; "Prof Brian Ripley" ; Sent: Tuesday, July 19, 2005 1:30 PM Subject: Re: [R] Survival dummy variables and some questions > Stephen, > > This has nothing to do with your R but to do with your email settings. > > Are you sure you are sending mails in plain text ? Your email on the > R-help mailing archive (see link below) appears to be unreadable > https://stat.ethz.ch/pipermail/r-help/2005-July/074210.html > > Please try to use plain text. (See http://expita.com/nomime.html). > > Regards, Adai > > > > On Tue, 2005-07-19 at 08:59 +0200, Stephen wrote: >> Many thanks I follow you what you say.... You can request predicted >> values at any sequence of ages - I guess there are plenty of postings on >> how to do that .... Regards, Stephen ----- Original Message ----- From: >>

"Frank E Harrell Jr" To: "Stephen" Cc: "Prof Brian Ripley" ; Sent: >>
Monday, July 18, 2005 6:13 PM Subject: Re: [R] Survival dummy variables

>> and some questions > Stephen wrote: >> Hi 1. Right perhaps this
should >> clarify. I would like to extract >> coefficeints for different levels of >> the IVs (covariate). So for >> instance, age of onset I would want >> Hazards etc for every 5 years and so >> on... The approach I took was to >> categorize the variables (e.g., age of >> onset) and then turn theu >> resultant categorical variable into a factor as >> opposed to a >> variable... that is when the problems began.... An >> alternative >> approach to pulling out different values at different levels >> of the >> variable is what I seek. 2. I looked for the link, but can't > > Your >> needs don't require categorization. You can request predicted values > >> at any sequence of ages. If you want hazard ratios you can take > >> differences in predicted log hazards and antilog them. > > Frank > > > >> -- > Frank E Harrell Jr Professor and Chair School of Medicine > >> Department of Biostatistics Vanderbilt University > >> >> ???? ?"? ???? ???? >> http://mail.nana.co.il >> >> [[alternative HTML version deleted]] >> >>
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R-help@stat.math.ethz.ch mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide! >> http://www.R-project.org/posting-guide.html >> > >

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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Jul 20 01:16:07 2005

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