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st: Problem with -gdecomp- using probit

From   <>
To   <>
Subject   st: Problem with -gdecomp- using probit
Date   Thu, 18 Apr 2013 13:21:17 +0100

Dear all,
I am trying to do a variable-specific decomposition on the results of a
probit regression. I am using the -gdecomp- command available from SSC
(ssc install gdecomp, replace). This also requires -margeff- to be
installed. For both commands I am using what I believe are the latest
versions (Version 2.2.0, 20 August 2009). 

When a run the decomposition on the probit I get the following error:
. gdecomp group: probit un hh_size foreign married schl_e age age2
= invalid name

I get the same error message when I run -gdecomp- for a logit. But the
decomposition works fine when I run it on a linear regression (which is
however the wrong regression for my data): gdecomp group :  regress y x1

I don't think there's anything wrong with my model or the data, as the
probit estimation runs fine on its own and the -margeff- command also
works fine following the -probit- estimation. 

Any ideas as to what may be going on??!!

Thanks in advance,
PS: I am aware of the 'nldecompose- command, but this doesn't seem to
offer an option for a variable-specific decomposition...
Dr Vassilis Monastiriotis
Hellenic Observatory, European Institute, LSE 

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