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st: RE: Negative predictions after trnbin0

From   "Scott Merryman" <[email protected]>
To   <[email protected]>
Subject   st: RE: Negative predictions after trnbin0
Date   Wed, 19 Jan 2005 19:43:21 -0600

I believe -trnbin0- is producing the linear prediction.  Exponentiate the
values to get the predicted number of events.


> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of D Jimenez Rubio
> Sent: Wednesday, January 19, 2005 9:49 AM
> To: [email protected]
> Subject: st: Negative predictions after trnbin0
> Dear all,
> I have used a truncated negative binomial model (trbin0) for the
> conditional number of visits to the doctor. I have found out that the
> predictions after the estimation of the positive number of visits is
> sometimes negative. Is there any one who could help me to understand why
> that happens?
> Many thanks in advance,
> Dolores

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