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st: Phtest with shared frailty


From   "David Barron" <mothsailor@btinternet.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Phtest with shared frailty
Date   Thu, 23 Mar 2006 11:34:58 -0000

The estat phtest command doesn't seem to work after stcox which has included
a shared frailty, but does work using exactly the same data and model but
excluding the frailty.  Is there a good reason for that?  

Thanks,
David

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