| Date: | Tue, 4 Jul 2006 05:14:14 -0400 |
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| Reply-To: | millerjm@UFL.EDU |
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| Sender: | "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU> |
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| From: | Jeff Miller <millerjm@UFL.EDU> |
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| Subject: | Negative binomial hurdle |
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| Content-Type: | text/plain; charset="us-ascii" |
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Does anyone know how to run a negative binomial hurdle model?
Since the likelihoods are additive between parts, I would think it to be
just a logit for the zeros and a negative binomial for the positives;
However, these results are diverging from those of other software and really
aren't that sensible.
I'm trying it in NLMIXED.
Has anyone tried this?
Thank you,
Jeff
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