Re: st: Differences in regression slopes

["E. Paul Wileyto" <epw@mail.med.upenn.edu>]

Responses so far have sent you this way and that.  Just look up -test- 
in STATA help.

To get to the point of using -test- for your purpose, you would need to 
specify a model that has group-specific slopes, or combine two 
regressions, one for each group, using -suest-.

Paul



Paul

Barth Riley wrote:

> Hello
>
> Is there a procedure in stata to determine if a regression slope
> (coefficient) for a predictor variable is significantly different between
> groups? I would like to apply this procedure for coefficients in logistic
> regression nalysis. 
> Thanks
>
> Barth
>
>
>
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>
>   
--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA  19104-3309

215-746-7147
Fax: 215-746-7140
epw@mail.med.upenn.edu
http://mail.med.upenn.edu/~epw/ 
*
*   For searches and help try:
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*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/