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st: RE: Negative Binomial Models
In my earlier email, I meant to say "not" exceed 50 counts. There are a lot of criminologists using these models with counts over 50 now, so if this is true, it would be helpful to get the correct information out. Alternatively, people may incorrectly be avoiding using these models in sociology because of this reference.
> -----Original Message-----
> From: MacDonald, John
> Sent: Wednesday, October 13, 2004 4:23 PM
> To: 'email@example.com'
> Subject: Negative Binomial Models
> Is there a maximum number of counts one should not exceed when using the negative binomial model? Even if there is a adjustment for exposure (e.g., rate of homicides in a city). I have a data set with over 200 homicides in some cities and I saw a reference in an article of American Journal of Sociology to Maddala's 1977 econometrics textbook that said you should exceed 50 counts. Is this true?
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