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Re: st: creating survival dataset


From   Michael McCulloch <mm@pinest.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: creating survival dataset
Date   Fri, 30 May 2008 19:17:30 -0700

Thank you Scott!

On Fri, May 30, 2008 at 4:42 PM, Michael McCulloch <mm@pinest.org> wrote:
 Hello,
 I'm creating survival data, and puzzled by two observations here, which
 probably reflect my elementary knowledge of the subject. Perhaps someone can
 offer some helpful advice.

 2. Why the confounder variable "w" is dropped due to collinearity?
Because w only takes two values depending on the value of "a"

. disp (1/(1+exp(-(-1.74))))
.14931293

. disp (1/(1+exp(-(-1.74+1))))
.32300414

Scott
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