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st: Mediation analysis using cox regression


From   Carr <carr@cba.usm.edu>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: Mediation analysis using cox regression
Date   Sun, 21 Nov 2004 23:04:33 -0600

Hello-

I would like to conduct a mediation analysis with cox regression.  I have
turnover data and survival times.  Here is how the mediation is theorized...

occupational experience ---> perceived job fit ---> survival

Also

occupational experience ---> organization expectations ---> survival

Using linear regression, most researchers would recommend following Baron
and Kenny's (1986)approach.  This 4 step approach tests for mediation, and I
am wondering whether the same 4 step approach to test for mediation applies
to a survival analyis.  Is this correct?  Is there another approach that is
recommended to conduct mediated cox regression?  Any cites that apply would
be greatly appreciated.
Thanks - Jon C 
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