p.dalgaard at biostat.ku.dk
Thu Jan 11 19:04:26 CET 2007
> How can I eliminate the overdispersion for binary data apart the use of the quasibinomial?
There is no such thing as overdispersion for binary data. (The variance
of a two-point distribution is a known function of the mean.) If what
you want to do is include random effects of some sort of grouping then
you might look into generalized linear mixed models via lmer() from the
lme4 package or glmmPQL from MASS.
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