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st: Fwd:

From   "laura.bottazzi" <>
To   "" <>
Subject   st: Fwd:
Date   Tue, 08 May 2007 08:54:51 +0200

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Dear statalist,

I am trying to estimate a Heckman selection model  using the two stage
procedure. Do you know of any stata module that allows for robust  standard
errors in the two stage procedure? I have tryed bootstrapping s.e.  but it =
not always easily  converge.


Prof. Laura Bottazzi
Universit=E0 di Bologna and IGIER - Universita' Bocconi

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