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Re: st: Heckman inclusion extra variables in the outcome equation


From   Joerg Luedicke <joerg.luedicke@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Heckman inclusion extra variables in the outcome equation
Date   Tue, 2 Oct 2012 10:02:14 -0500

On Tue, Oct 2, 2012 at 8:55 AM, Jan Wynen <Jan.Wynen@kuleuven.be> wrote:
"According to Wooldridge"

Please provide proper references! Even if somebody knew exactly what
"Wooldridge" said, (s)he might want to consider having a look at it
again before posting anything. Trying to figure out where exactly
(journal?, book?, page?) he said what may become a burden for this
group of people. On the other hand, people who do not know (exactly)
what "Wooldridge" said might ditch this posting right away instead of
trying to figure out when and where he could have said that. In any
case, your chances of getting a reply will decrease without proper
referencing.

Please see

http://www.stata.com/support/faqs/resources/statalist-faq/

especially 3.4.

J.
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