-findit oaxaca- gives you a variety of packages. I think that the
package you are looking for is described in:
Ben Jann (2008) "he Blinder–Oaxaca decomposition for linear regression models" The Stata Journal, 8(4): 453-479.
http://www.stata-journal.com/article.html?article=st0151
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
--- On Mon, 1/6/09, Akresh, Ilana Redstone <[email protected]> wrote:
> From: Akresh, Ilana Redstone <[email protected]>
> Subject: st: alternative specification for Oaxaca decomposition?
> To: "[email protected]" <[email protected]>
> Date: Monday, 1 June, 2009, 1:06 AM
> Hello,
>
> I have a paper where I carried out a Oaxaca decomposition
> using the following code:
>
> reg y x if group == 1
> predict yhat
> sum yhat if group == 2
> scalar a = r(mean)
>
> sum y if group == 1
> scalar meany1 = r(mean)
> sum y if group == 2
> scalar meany2 = r(mean)
> scalar fractionduetodiscrim = (a - meany2) / (meany1 -
> meany2) scalar list fractionduetodiscrim
>
> This should then correspond to the equation:
>
> ybarDIS - ybarADV = [(xbarDIS - xbarADV)BetaDIS] +
> [xbarADV(BetaDIS - BetaADV)]
>
> Where DIS indicates the disadvantaged group and ADV
> indicates the advantaged group.
>
> -----------------------------
>
> **However, I would like to know how to calculate the
> decomposition as:
>
> Yadv - Ydadv = <beta>*(Xadv - Xdadv) +
> Xadv(<beta>dadv - <beta>*) + Xdadv
> (<beta>* - <beta>adv)
>
> In the case directly above, <beta>* should be a
> vector containing the weighted averages of the 'adv' and
> 'dadv' regression coefficients, with the proportion of 'adv'
> and 'dadv' in the sample as the relevant weights. The first
> component on the right-hand side is the productivity
> advantage of the 'adv' group over the 'dadv' group in the
> absence of discrimination. The second term is the 'adv
> advantage' or the amount by which 'adv' are overcompensated
> relative to a discrimination-free setting, and the last term
> is the 'dadv disadvantage' or the amount by which 'dadv' is
> paid less than the wage that would prevail in the absence of
> discrimination.
>
> However, I am totally unclear on how to do this in Stata -
> in other words, what would be the code to get me
> there? Advice, please?
>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
