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st: discontinuous region in MLE

From   xiao yi <>
Subject   st: discontinuous region in MLE
Date   Wed, 16 Nov 2005 16:29:50 -0800 (PST)

Hi Statalist,

I am running a hazard model using STREG with gamma
distribution. I keep getting a message "discontinuous
region encounter, cannot compute an improvement". Does
anyone know why I get this? When I specify a Weibull
or LogNormal distribution, no such problem. 


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