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st: interpretation of disappearing siginifcance after adding interaction term


From   moleps islon <[email protected]>
To   [email protected]
Subject   st: interpretation of disappearing siginifcance after adding interaction term
Date   Mon, 11 May 2009 02:19:59 +0200

How do I interpret the finding of disapperance of significance after
adding an interaction term ??


logistic infection sex age
...higly significant sex-beta while age is non significant...

gen sex_age=sex*age

logistic infection sex age sex_age
..no sigificant betas...

predxcon infeksjon,xvar(alder) class(sex_en) from (20) to (90) inc(5) graph

.. showing what seems to be a significant splaying of the curves...


Any idea??
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