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st: RE: FITINT: does it test all two-way interactions simultaneously?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: FITINT: does it test all two-way interactions simultaneously?
Date   Tue, 19 May 2009 17:20:27 +0100

-fitint- is a user-written program from SSC. Please remember to specify
where user-written stuff you refer to comes from. 

In this case, I don't recognise either of the authors as contributors to
the list. Either way, if you get no good answers to this question, you
may need to look at the code -- which appears to be well structured and
commented -- and/or to contact the program authors directly. 

Nick 
n.j.cox@durham.ac.uk 

John LeBlanc

I have an -ologit- model with 8 predictor variables and fortunately a 
large dataset. I'm using -fitint- to see if there are any interesting 
two-way interactions among the 28 possibilities. Does -fitint- put all
28 
in simultaneously or does it (I hope) test them one by one?

by the way, what is the purpose of the -factors- option? At this point, 
I'm simply copying all dependent variables into both -factors()- & 
-twoway()-. I can't figure this out from the .hlp file.

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