Zero Inflated Poisson Regression Spss. Estimate and predict a zero-inflated count model. This video demonstrates the use of Poisson and negative binomial regression in SPSS.
Jun 16 2018 Resolving The Problem SPSS does not currently offer regression models for dependent variables with zero-inflated distributions including Poisson or negative binomial. The mixture is described as follows. One component is a distribution that is all zero.
The data distribution combines the Poisson distribution and the logit distribution.
Jan 28 2017 The zero-inflated Poisson command estimates a model in which the distribution of the outcome is a two-component mixture. ZIP models assume that some zeros occurred by a Poisson process but others were not even eligible to have the event occur. 1 Those who have a zero count with a probability of 1 Always-0 group and 2 those who have counts predicted by the standard Poisson Not always-0 group. This video demonstrates the use of Poisson and negative binomial regression in SPSS.
