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From |
Claudia Berg <cberg@gwmail.gwu.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: How do I impose the constraint that rho is a given number (eg 0.2) using biprobit? |

Date |
Sat, 20 Mar 2010 14:57:07 -0400 |

Hi, I'm a newcomer to statalist and hoped you could help me. I'm trying to run a biprobit model with the constraint that rho (the correlation between the errors of the two equations) is fixed at a given value, say 0.2. I found instructions online how to set rho to zero using heckman (see http://www.stata.com/support/faqs/stat/constraints.html) but am unclear how to modify it to fix rho at another value. Thank you! Claudia * * 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**:**st: RE: How do I impose the constraint that rho is a given number (eg 0.2) using biprobit?***From:*"Martin Weiss" <martin.weiss1@gmx.de>

**Re: st: How do I impose the constraint that rho is a given number (eg 0.2) using biprobit?***From:*Stas Kolenikov <skolenik@gmail.com>

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