--- On Thu, 12/3/09, Paula Albuquerque wrote:
> I am trying to estimate a switching probit using movestay.
> It converges with the unweighted data, but it is not
> correct to use unweighted data. When I try to do the same
> with the weighted data, and using different estimation
> techniques, either I obtain a non-convergence diagnostic or
> one of the rho’s comes out as a 1, which I suppose has the
> same meaning.
>
> I would really appreciate a suggestion on what I should
> try or look for!
One thing that jumps to mind is that you that there may be
something wrong with your weights. Try typing:
-sum weight, detail- (where weight needs to be replaced with
the variable name of your weight variable), and see if you
have any negative weights or if there are some exceptionally
high weights.
-- Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
