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st: Oaxaca and categorical variables


From   "Luana Marques Garcia" <luana.garcia@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Oaxaca and categorical variables
Date   Mon, 24 Nov 2008 16:51:12 +0000

Hi Everyone,

I am trying to use Oaxaca by Ben Jann of May 08 with the categorical
option and I dont know why I get the error:

      "categorical(): no reference indicator found".

The command I am running is the following:

.oaxaca ln_hwage educa age exper expersq condnum1-condnum8 formal
urban uf1-uf27 sector1-sector12 if female==0, by(white) noisily
weight(0) eform svy categorical(uf? uf??, condnum?, sector? sector??).

Does anyone know why?

Thanks a lot,
Luana
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