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From |
Tom Trikalinos <ttrikalin@mac.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: mlogit and IV? polychotomous logistic model and endogenous explanatory variable |

Date |
Mon, 13 Sep 2004 20:55:27 +0300 |

Nick's absolutely right. Congratulations on the etymology. Tom (Greek is ... just Greek to me) Unfortunately, I cannot offer Thi the slightest help. On Sep 13, 2004, at 8:02 PM, Nick Cox wrote:

My only advice is marginal to your main question. The term "polychotomous", although common in the literature, is malformed and based on a misparsing of the word "dichotomous", whose elements are "dicho" and "tomous". The term "polytomous", also common in the literature, is more nearly correct. Help stamp out this linguistic monstrosity! Nick n.j.cox@durham.ac.uk N.B. this is a different kind of argument from those in favour of "heteroskedasticity" rather than "heteroscedasticity". In the latter case, there are plenty of precedents for rendering the Greek letter kappa into the English letter c, so one could be sceptical about that argument. "polychotomous" just got into the literature because someone didn't understand the etymology of "dichotomy" and other people copied that mistake. It's still wrong. Ngo,PT, a.k.a. Thi MinhSorry to bother you again for the second time in the day! I would like estimate a polychotomous logistic model using mlogit. The main explanatory variable (say X) I use is endogenous and in binary models, I have used IVs using the ivprob command. How would one go about estimating polychotomous logistic model with an endogenous variable for which I have an instrument? I am interested in getting the relative risk ratio as I am trying to differentiate the impact X on the various discrete categories of Y on the left hand side. Any advice would be really appreciated. It is the first time I am using logit/probit and polychotomous models.* * 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/

* * 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: RE: mlogit and IV? polychotomous logistic model and endogenous explanatory variable***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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