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From |
"Telli Anvernali Henry" <lexht2@nottingham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: Explaining Gamma coefficient after bioprobit command |

Date |
Sun, 2 May 2010 01:09:14 +0100 |

My version of bioprobit (output bello)is the same as yours. . which bioprobit c:\ado\plus\b\bioprobit.ado *! version 1.11 17Aug2007 Henry -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten buis Sent: 30 April 2010 11:21 AM To: statalist@hsphsun2.harvard.edu Subject: Re: st: Explaining Gamma coefficient after bioprobit command --- On Thu, 29/4/10, Telli Anvernali Henry wrote: > I am using the command bioprobit for my bivariate ordered > probit regressions and I wondered if anybody can help me > with an explanation for the estimated gamma beyond just > the sign. I know rho measures the correlation of the error > terms while gamma measure the actual relationship between > equation 1 and 2 but apart from the sign of the gamma > coefficient what can I say about the impact of the coefficient > itself and does it matter that gamma and rho have opposite > signs? For instance if gamma is 0.64, what can I say apart > from "there is a strong positive correlation between depvar1 > and depvar2". -bioprobit- is a user written command, the Statalist FAQ askes you to say where you got it from. This is crucial because there are often multiple versions of a user written program floating around cyber space. This appears to be the problem here, as my version (downloaded from SSC by typing in Stata -ssc install bioprobit-) does not return a gamma coefficient, so there is nothing to interpret. -- Maarten . which bioprobit c:\ado\plus\b\bioprobit.ado *! version 1.11 17Aug2007 -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/ This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. * * 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: Explaining Gamma coefficient after bioprobit command***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

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