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From |
Nick Cox <njcoxstata@gmail.com> |

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

Subject |
Re: st: Probability threshold for inclusion in ZINB count model |

Date |
Sat, 25 Feb 2012 10:46:23 +0000 |

Nick

I am having a hard time finding the probability threshold that zinbuses to include/limit observations in the count model. Is there aset probability threshold? If not how do I find the threshold?After running zinb for a number of count models, I was seeking torun a simple logit model by dichotomizing my dv instead of having acount. I would like to limit my observations by excluding thosethat would be in the certain zero group. Of course the significanceof the logit coefficients would be affected by the threshold I set(which observations are included). I would like to use the logitmodel to seek not what causes multiple occurrences (count) but whatfactors lead to the likelihood of an occurrence, from zero to one,for those observations not in the certain zero group.If there is not a set probability threshold or it can not be found,what would be the best probability to use? 50% cutoff? Meanprobability

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**Follow-Ups**:**st: Re: Probability threshold for inclusion in ZINB count model***From:*Jeremy Bowling <jlbkq6@mail.missouri.edu>

**References**:**st: Probability threshold for inclusion in ZINB count model***From:*Jeremy Bowling <jlbkq6@mail.missouri.edu>

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