Re: st: random and fixed effects

[David Jacobs <jacobs.184@sociology.osu.edu>]

No probably because your dependant variable counts for some cases 
don't change over time.

Dave Jacobs

At 02:14 PM 1/23/2008, you wrote:

> Dear Alls,
>
> I am estimating a poisson either  random (xtpoisson) or fixed
> (xtpoisson, fe) effects. When I run the random effects model the
> observations  are about 88210. Instead when I run the fixed effects
> model the observations are about 80230.   Shouldn't I have the same
> number of observations?
>
> thank you very much
>
> federica demaria
>
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