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st: Re: Multicollinearity or confounding


From   Marc Campo <mcam54@yahoo.com>
To   Marc Campo <mcam54@yahoo.com>, statalist@hsphsun2.harvard.edu
Subject   st: Re: Multicollinearity or confounding
Date   Thu, 30 Nov 2006 12:45:42 -0800 (PST)

I have also been considering a change in the ORs or B
coefficients to be confounding and inflation of the
SEs and CIs to be collinearity.  Is this correct??

Mcap
--- Marc Campo <mcam54@yahoo.com> wrote:

> I have a very basic question.  I have ordinal
> predictors in my LR analyses.  They have been
> treated
> as continuous.  Some of them are highly correlated
> and
> test positive for collinearity (VIFs, Condition
> Index,
> etc).  As there are 4-5 different values for each
> predictor.  Is this confounding or collinearity or
> both?  I have been dropping one from my multivariate
> as you are encouraged to do with collinearity.  But,
> with confounding, you are encouraged to retain them.
>   
> 

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