Re: [R] zerinfl() vs. Stata's zinb

2010-04-13 Thread Achim Zeileis
On Mon, 12 Apr 2010, David Fortunato wrote: Hello, I am working with zero inflated models for a current project and I am getting wildly different results from R's zeroinfl(y ~ x, dist=negbin) command and Stata's zinb command. Does anyone know why this may be? I find it odd considering that

[R] zerinfl() vs. Stata's zinb

2010-04-12 Thread David Fortunato
Hello, I am working with zero inflated models for a current project and I am getting wildly different results from R's zeroinfl(y ~ x, dist=negbin) command and Stata's zinb command. Does anyone know why this may be? I find it odd considering that zeroinfl(y ~ x, dist=poisson) gives identical to