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From |
urbain thierry YOGO <yogout@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Calculating margins after biprobit |

Date |
Mon, 5 Dec 2011 21:37:41 +0100 |

Try the following command margins, dydx(_all) post this is equivalent to mfx compute, predict(p11) with (p11)=(depvar1=1, depvar2=1) however a simple and general way is the following The marginal effects for, Pr(depvar1=1, depvar2=1), are mfx compute, predict(p11) The marginal effects for Pr(depvar1=1, depvar2=0) are mfx compute, predict(p10) The marginal effects for Pr(depvar1=0, depvar2=1) are mfx compute, predict(p01) The marginal effects for Pr(depvar1=0, depvar2=0) are mfx compute, predict(p00) 2011/12/5, Wakeman, Simon <Simon.Wakeman@esmt.org>: > I am investigating the effect of a binary variable X on a binary variable Y, > where X is potentially endogenous. I estimated a biprobit: > biprobit (Y = X ) (X = Z). > > However, when I use the following margins command > margins, dydx(X) over(X) > I get the error message: > "default prediction is a function of possibly stochastic quantities other > than e(b)" > > I also tried mfx but it does not seem to produce a marginal effect for X. > > I would much appreciate if anyone can tell me how to obtain the marginal > effect of X on Y. > > Thanks for your help. > > Simon > > > * > * 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/ > -- *Urbain Thierry YOGO P.h.D candidate in Economics* * * 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/

**Follow-Ups**:**Re: st: Calculating margins after biprobit***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

**References**:**st: Calculating margins after biprobit***From:*"Wakeman, Simon" <Simon.Wakeman@esmt.org>

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