[R] poisson with overdispersion

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From: Amanda Phipps (genepi51@yahoo.com)
Date: Thu 01 May 2003 - 15:04:27 EST


Message-id: <20030501050427.66972.qmail@web41610.mail.yahoo.com>

I am fitting a poisson model and it appears to have
overdispersion. I am interested in using the
quasipoisson family (with the glm command). Will this
account for the overdispersion in the model? Is there
an additional method for accounting for a dispersion
parameter not equal to 1 (with the glm command)?

And after fitting the model, how to I obtain the
fitted values and their respective standard errors?

Thank you-
Sarah Watson

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