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

From: Geoff Russell <geoffrey.russell_at_gmail.com>
Date: Mon, 10 Mar 2008 23:16:10 +1030


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



R-help_at_r-project.org mailing list
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 - 12:55:51 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 11 Mar 2008 - 01:30:21 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive