Re: st: Calculating an average effect

[Roger Newson <roger.newson@kcl.ac.uk>]

At 15:21 25/03/04 +0100, Hans J. Baumgartner wrote (in reply to David J. 
Bernstein):

> If Salary is in log, then nonwhites earn on averarge _b[nonwhite] 
> percentage more than the repecitve dummy base.
More accurately, exp(_b(nonwhite)) is the geometric mean ratio between 
nonwhites and whites. For more about estimating confidence intervals for 
geometric means and their ratios in Stata, see the Stata tip in Newson (2003).

References

Newson R. Stata Tip 1: the -eform()- option of -regress-. The Stata Journal 
2003; 3(4): 445. Pre-publication draft downloadable from my website at
http://www.kcl-phs.org.uk/rogernewson/



> David J. Bernstein schrieb:
> > Hello wise ones,
> > I have a model where salary is a function of race
> > (i.e. nonwhite=1) and a set variables such as
> > education, seniority, etc. for 7 years.  How do I
> > calculate the average race effect across the 7 years?
> > Thanks to anyone that can help
> > -David
> >
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>
> --
> Hans J. Baumgartner
> DIW Berlin
> German Institute for Economic Research
> Dept. Public Economics
> K�nigin-Luise-Str. 5; 14195 Berlin; Germany
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> http://www.diw.de
> http://www.hansbaumgartner.de
>
>
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--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
5th Floor, Capital House
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Email: roger.newson@kcl.ac.uk
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Opinions expressed are those of the author, not the institution.


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