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st: small sample size and Heckmand selection


From   Kevin Dodson <dodsonk98@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: small sample size and Heckmand selection
Date   Thu, 13 May 2010 21:20:50 -0700 (PDT)

Hi, 
I hope someone can offer useful advice on this. I have a 
two-stage model (a variation on Heckman selection). However, proper 
estimation in the second stage is posing a problem since the sample size is drastically reduced (ie. far 
fewer than 30). Can someone offer a solution? Am I just out of luck. Any and all opinion/advice is welcome. Thanks. 


      

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