I am trying to use Poisson regression to model count data. My results are 
suggestive of under dispersion (0.79). How close to one does one want the 
measure of dispersion to be before one accepts the results of the analysis?

I know that there is no definitive answer to my question, but I would like to 
get some sense of general practice.
Thanks,
John

John Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
Baltimore VA Medical Center GRECC and
University of Maryland School of Medicine Claude Pepper OAIC

University of Maryland School of Medicine
Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524

410-605-7119 
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