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st: xtmepoisson error variance

From   Margit Averdijk <>
To   <>
Subject   st: xtmepoisson error variance
Date   Fri, 3 Jul 2009 10:37:45 +0000

Dear all,
I am estimating xtmepoisson models. As I understand, the variance of the error term is fixed at a minimum. Is there any way to set the variance of the error term 'free' so that I can control for overdispersion?
Many thanks in advance,
Margit Averdijk
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