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st: RE: comparing model with gllamm


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: comparing model with gllamm
Date   Fri, 24 Nov 2006 00:05:03 -0000

There is no question here, only a statement. 

What kind of answer do you expect? 

Essentially -- I guess -- you have to see how much difference 
the treatment of the variable specified makes. This can be informal 
as well as formal in terms of looking at whether the model 
appears to perform better in one case than the other, including 
how sensitive coefficients of the _other_ variables are. 

In other situations, there is sometimes an argument for 
including a variable both as continuous and as discrete. 
But experts would need more information to comment further. 

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

stata_user stata_user
 
> I would like to compare between two  non nested models, I am 
> using gllamm 
> with a continuous  outcome and a mixture of discrete and continuous 
> independent variables.
> 
> Model 1: includes a variable X1 as continuous
> Model2: includes a decrete version of X1
> 
> Thanks a lot for any help

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