Hi Max, Matthias and David and anyone else interested,
My question was prompted by seeing various prospective
cohort studies which are deriving the RR of colorectal cancer due to
smoking and which simply censor
people who die from diseases other then colorectal cancer and then use
coxph to get an
"Geoff Russell" <[EMAIL PROTECTED]> wrote in
news:[EMAIL PROTECTED]:
> 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
>
Hi Geoff,
I think the answer to such a problem (overall survival vs. disease free
survival) depends on the regulatory
environment, for example, in a phase III clinical trial, OS would be
used, whereas in an equivalence study,
DFS would be used.
Best,
Matthias
Geoff Russell schrieb:
> Dear Us
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 no
4 matches
Mail list logo
