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Re: st: Issue with psmatch2


From   Christopher Baum <kit.baum@bc.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Issue with psmatch2
Date   Fri, 13 Dec 2013 12:29:02 +0000

<>
On Dec 13, 2013, at 2:33 AM, Amadou wrote:

> I am having trouble with psmatch2.
> 
> . psmatch2 Treatment Test1 Male Res_dep, outcome(Test2)
> 
> Probit regression                                 Number of obs   =         22
>                                                  LR chi2(3)      =       2.94
>                                                  Prob > chi2     =     0.4008
> Log likelihood = -13.687694                       Pseudo R2       =     0.0970
> 
> - ------------------------------------------------------------------------------
>   Treatment |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
> - -------------+----------------------------------------------------------------
>       Test1 |  -.1986892   .2724534    -0.73   0.466     -.732688    .3353096
>        Male |   .5929837   .6528513     0.91   0.364    -.6865813    1.872549
>    Res_dept |   1.392754   .9005725     1.55   0.122    -.3723361    3.157843
>       _cons |   .0514229   .8150437     0.06   0.950    -1.546033    1.648879
> - ------------------------------------------------------------------------------
> There are observations with identical propensity score values.
> The sort order of the data could affect your results.
> Make sure that the sort order is random before calling psmatch2.
> unrecognized command
> r(199);
> 
> end of do-file

psmatch2 has not relied on C-language plugin technology for a Very Long Time. It was rewritten in Mata years ago. You must 
have a very old and obsolete version of psmatch2. It was last updated on SSC in July 2012. You should -adoupdate psmatch2, update-.

Kit


Kit Baum
Professor of Economics and Social Work, Boston College, Chestnut Hill MA, USA
DIW Research Professor, Department of Macroeconomics, DIW Berlin, Berlin, Germany
baum@bc.edu  |  http://ideas.repec.org/e/pba1.html












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