Riccardo (Jack) Lucchetti a écrit&nbsp;: <blockquote cite="midalpine.DEB.0.83.0705261836170.14871@ec-4.econ.univpm.it" type="cite">I'm working on the Heckit estimator, and I need some feedback on the treatment of missing observations.&nbsp;</blockquote>  <blockquote cite="midalpine.DEB.0.83.0705261836170.14871@ec-4.econ.univpm.it" type="cite">For the two-step estimator, Stata uses matching samples. What should WE do? &nbsp; <br> </blockquote> From my point of view, let us do what Stata does! <br> Have you checked other econometrics softwares? I'm not very familiar with Heckit estimator but I guess RATS provides a procedure for it.<br> <br> Best, Artur<br> <br>  <br> <p>&#32;


      <hr size="1"> 
Stockage illimité de vos mails avec Yahoo! Mail. <a href="http://fr.promotions.yahoo.com/mail/nouveau_yahoomail2.html">Changez aujourd'hui de mail !</a>