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Re: st: Using pathreg in STATA


From   Amal Khanolkar <Amal.Khanolkar@ki.se>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Using pathreg in STATA
Date   Tue, 07 Sep 2010 18:29:10 +0200

Dear Michael,

Thank you for your reply. 

If I understand right, in the example that you sent me, read and write
are corelated but their effects are not estimated as such. My problem
is, say hypothetically, that we had an arrow with age pointing to math
and another similar 'age-arrow' pointing to science. I know that age has
an effect on both math and science. Age is not in the pathway under
study but has to be adjusted for. 

Does one then just include another (math age) & (science age) command to
signify these relationships in the pathreg command (thereby adjusting
for age aswell)??

Thanks,

/Amal.

Amal Khanolkar,
PhD Student,
CHESS | Centre for Health Equity Studies,
Karolinska Institutet/Stockholm University,
Sveavägen 160, Sveaplan - 10691 Stockholm.

Phone: +46 (0)8 162584
www.chess.su.se

----- Original Message -----
From: "Michael N. Mitchell" <Michael.Norman.Mitchell@gmail.com>
Date: Monday, September 6, 2010 8:38 pm
Subject: Re: st: Using pathreg in STATA
To: statalist@hsphsun2.harvard.edu

> Dear Amal
> 
>   If I understand your question correctly, the example at
> 
> http://www.ats.ucla.edu/stat/stata/faq/pathreg.htm
> 
>   would be such an example. In that example, read is adjusted for 
> write, and write is 
> adjusted for read.
> 
> I hope that helps,
> 
> Michael N. Mitchell
> Data Management Using Stata      - 
> http://www.stata.com/bookstore/dmus.htmlA Visual Guide to Stata 
> Graphics - http://www.stata.com/bookstore/vgsg.html
> Stata tidbit of the week         - 
> http://www.MichaelNormanMitchell.com
> 
> 
> On 2010-09-06 8.34 AM, Amal Khanolkar wrote:
> > Hi everyone,
> >
> > I have a question regarding the 'pathreg' command. Is it possible to
> > adjust for covariates/confounders in addition to just studying 
> effects> between variables in the path model? If so, could anyone 
> please give an
> > example of a command with adjustment for confounders using pathreg.
> >
> > Thanks,
> >
> > /Amal.
> >
> > Amal Khanolkar,
> > PhD Student,
> > CHESS | Centre for Health Equity Studies,
> > Karolinska Institutet/Stockholm University,
> > Sveavägen 160, Sveaplan - 10691 Stockholm.
> >
> > Phone: +46 (0)8 162584
> > www.chess.su.se
> >
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