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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: -Predict- after multi-equation ml command |

Date |
Thu, 20 Sep 2007 21:06:11 +0100 (BST) |

--- Rachel <academicgirl@gmail.com> wrote: > I have a simulataneous equation logit model which is estimated using > an ml program that I wrote. Afterwards, I can run a linear > prediction using the command > > -predict linvalue, equation(equationname) > > But is there any way that I can use predict to predict the value of a > positive outcome, as it does after the -logit- command with the -pr- > option? (I realize that I may need to modify the ml program, since > Stata doesn't "know" that the dependent variables are all binary.) There are two answers possible depending on whether you want to write a program which can easily be used by others, or you are just want a program that is only occationally going to be used by you. If you are writing a program for others you could write a program that is going to be read by -predict-. You have to return the name of that program in e(predict). Common practice is to call it programname_p, where programname is the name of the main program. -help _pred_se- gives you lots of pointers on how to write such a program for a single equation model, and with some puzzeling and looking at already existing predict programs you can figure out how to generalize it to a multi equation model. If you are just creating the program for your own use it is probably much more easy to figure out how to derive the quantities you want using the linear predictor (you will have to do that also when you are writing the -predict- command). Hope this helps, Maarten ----------------------------------------- Maarten L. Buis Department of Social Research Methodology Vrije Universiteit Amsterdam Boelelaan 1081 1081 HV Amsterdam The Netherlands visiting address: Buitenveldertselaan 3 (Metropolitan), room Z434 +31 20 5986715 http://home.fsw.vu.nl/m.buis/ ----------------------------------------- ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: -Predict- after multi-equation ml command***From:*Rachel <academicgirl@gmail.com>

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