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Re: st: Longitudinal zero-inflated Poisson model

From   Richard Williams <>
To, "" <>
Subject   Re: st: Longitudinal zero-inflated Poisson model
Date   Sat, 28 Jan 2012 16:33:06 -0500

At 03:13 PM 1/28/2012, Clyde B Schechter wrote:
Does anybody know of a Stata implementation of multi-level zero-inflated Poisson regression that I might use for longitudinal data with zero-inflated count outcomes?

In his Sage book "Fixed Effects Regression Modeks" Paul Allison says (p. 68) "This chapter does not consider zero-inflated Poisson and negative binomial models for 3 reasons: They are much more complex, there is little software available for panel data, and, finally, the negative binomial model itself often provides a satisfactory fit to data with large numbers of zero counts."

Richard Williams, Notre Dame Dept of Sociology
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