[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

RE: st: Zero Inflated Poisson

From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   RE: st: Zero Inflated Poisson
Date   Fri, 14 Dec 2007 16:06:41 -0000

I had in mind also, and perhaps I should spell this out, 
that the results in terms of t statistics and so forth 
should send signals about which variables were less 

Maarten buis

--- "francesca.modena" <[email protected]> wrote:
> I run a zero inflated poisson model. The sample is 409 observations,
> with 87 nonzero observations and 322 zero observations. There are 42
> independent variables. <snip> Can you suggest me if 42 parameters are
> too many for my sample?

Nick already answered that Stata will tell you if it is completely
impossible to estimate this model. However, even if Stata gives you
output I would still be very nervous about such a model with this data.
Do you really need all 42 variables?

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index