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st: 3SLS / Three Stage with heteroscedasticity robust errors


From   Wiebke Schlanbusch <wvschl@yahoo.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: 3SLS / Three Stage with heteroscedasticity robust errors
Date   Wed, 9 Sep 2009 15:47:45 +0000 (GMT)

Dear Statalist-ers,

for my diploma thesis I want to estimate a simultaneous equations model with different data samples using -reg3-. I tested all my single equations on heteroscedasticity using -ivreg2- for the equations and -ivhettest- for the test. Some of my equations turn out to be heteroscedastic and other not... Therefore I would like to estimate the 3SLS models using robust errors, which is not implemented. Someone suggested to programm it in Stata, but unfortunately my programming skills are not worth mentioning nor do I have the programming manual. This is why I am asking if anyone ever did this "robust errors three stage"-programming and might be so kind to help me with the code. 

(I am currently using Stata 10.1)

Kind regards,
Wiebke Schlanbusch


      

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