[R] zero inflated poisson and censored-continuous models

[Daniel A. Powers]

Georgina --

For the tobit you can try using the survival5 package with
dist="gaussian". Other options for dist make this attractive.

Cheers,
Dan
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Dan Powers
Associate Professor, Sociology  
University of Texas at Austin                    


On Wed, 7 Feb 2001 Georgina.Bermann at astrazeneca.com wrote:

> I wonder if there is a package that will estimate a Zero Inflated Poisson
> Model (ZIP), and also if there is a package that will estimate what is
> called the Tobit model: that is a combination of censored and observed
> values in the same sample.
> 
> Georgina Bermann
> Biostatistics
> AstraZeneca R&D Mölndal
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