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st: New package on SSC: -devcon-

From   "Jann, Ben" <[email protected]>
To   <[email protected]>
Subject   st: New package on SSC: -devcon-
Date   Fri, 13 May 2005 08:20:28 +0200

Thanks to Kit Baum, a new package called -devcon- is available
from the SSC Archive.

-devcon- may be used to apply the deviation contrast transformation to 
estimation results. That is, -devcon- transforms the coefficients 
of 0/1 dummy variables so that they reflect deviations from the 
"grand mean" rather than deviations from the reference category 
(the transformed coefficients are equivalent to those obtained by 
the so called "effects coding") and adds the coefficient for the 
reference category. The variance-covariance matrix of the estimates 
is transformed accordingly. The transformed estimated can be used 
with post estimation procedures. In particular, -devcon- can be used
to solve the identification problem for dummy variable effects 
in the so-called Blinder-Oaxaca decomposition (see the -oaxaca- 
package). Stata 8 is required.

To install the package, type

 . ssc install devcon


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