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Re: st: Levpet, program error


From   Scott Merryman <scott.merryman@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Levpet, program error
Date   Wed, 11 Nov 2009 19:21:45 -0600

Because there is more than one part to -levpet-.

-findit levpet- brings up:

SJ-8-2  st0145  . .  Production function est. using the Olley and Pakes method
        (help opreg if installed) . . . .  M. Yasar, R. Raciborski, and B. Poi
        Q2/08   SJ 8(2):221--231
        provides reliable productivity measures from production
        function estimation by controlling for simultaneity and
        selection bias

SJ-4-2  st0060  Production function est. using inputs to control unobservables
        (help levpet if installed)  . . A. Petrin, B. P. Poi, and J. Levinsohn
        Q2/04   SJ 4(2):113--123
        implements the Levinsohn and Petrin approach that uses
        intermediate inputs as proxies for unobservable shocks
        to estimate the production function


In which -levpet- has the following installation files:

      st0060/levpet.ado
      st0060/levpet.hlp
      st0060/levpet.dlg
      st0060/levpet_p.ado
      st0060/lp_bs_ss.ado
      st0060/nllp_bs_gmm.ado
      st0060/lp_gmm.ado
      st0060/lp_gmm_grid.ado
      st0060/lp_srch.ado


Scott

On Wed, Nov 11, 2009 at 5:36 PM, Solorzano Mosquera, Jenniffer
<jenniffers@iadb.org> wrote:
> Actually I found it in : www.stata-journal.com/software/sj4-2/st0060/levpet.ado
>
> But when I try to run it an error pop up:
>
>
>
> . levpet lnUSY if panel==3, free(lnUSL) proxy (lnUSM) capital(lnUSK) revenue
> no observations
> error #2000 occurred in program nllp_bs_gmm
> r(196);
>
> Any ideas about the program nllp_bs_gmm?
>
>
> Jenniffer Solorzano Mosquera
> Labor Markets Division - Inter-American Development Bank
> Washington, DC - USA
> (202) 623-3659
>
>
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