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st: formulas for svyheckman and svyheckprob


From   "Sayer, Bryan" <BSayer@s-3.com>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: formulas for svyheckman and svyheckprob
Date   Fri, 28 Feb 2003 17:29:29 -0500

Has anyone experimented with the new survey versions of heckman and
heckprob?  I've never seen any literature explaining the derivations for
these, and the manual doesn't seem to list anything either.  Does anyone
know any citations?

Bryan Sayer
Statistician, SSS Inc.
bsayer@s-3.com

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