Re: st: St: predicted values in zinb regression

[Maarten buis <maartenbuis@yahoo.co.uk>]

--- On Fri, 18/3/11, rachel grant wrote:
> I have used the command predict n to generate a set of
> predicted Y values after running zinb regression. I have
> my predicted values but there are no zeros in the
> predicted values at all, although in most cases the
> predicted value was very small where a zero should be e.g.
> 0.35. Is this OK or have I done something wrong?

predict will give you the expected value, which is the 
probability that an observation falls within the non-0 
category times the expected count in that case, and this 
will not be 0.

Hope this helps,
Maarten 

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://www.maartenbuis.nl
--------------------------


      

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