Re: [R] A stats question -- about survival analysis and censoring

From: Max <mnevill_at_exitcheck.net>
Date: Mon, 10 Mar 2008 07:50:11 -0700

Geoff,

This is a tricky question. Have you done a literature search?

-Max

Geoff Russell formulated the question :
> Dear UseRs,
>
> Suppose I have data regarding smoking habits of a prospective cohort and wish
> to determine the risk ratio of colorectal cancer in the smokers compared to
> the non-smokers. What do I do at the end of the study with people who die
> of heart disease? Can I just censor them exactly the same as people who
> become uncontactable or who die in a plane crash? If not, why not?
>
> I'm thinking that heart disease isn't independent of smoking even though
> a death from heart disease is probably uninformative about colorectal
> cancer risk. Hence
> I suspect simply censoring these deaths will introduce a bias, but I don't
> know how to correct for it.
>
> Many thanks,
>
> Geoff Russell -- an interested student
>
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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 and provide commented, minimal, self-contained, reproducible code. Received on Mon 10 Mar 2008 - 14:55:41 GMT

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