Extra Poisson

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JNST
Posts: 1
Joined: Wed Nov 23, 2011 12:32 pm

Extra Poisson

Post by JNST »

Can someone tell me what the difference is between extra poisson and negative binomial? What is the difference between the assumptions and estimation techniques if I use the "extra" option under the nonlinear tab in MLwiN?

Also, do I not get a DIC with the extra poisson results but I get a DIC with the regular poisson results?
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