Change a Negative Binomial fit to a GLM fit
Usage
glm.convert(object)
Arguments
object
|
An object of class negbin , typically the output from glm.nb() .
|
Description
This function modifies an output object from glm.nb()
to one
that looks like the output from glm()
with a negative binomial
family. This allows it to be updated keeping the theta parameter
fixed.Details
Convenience function needed to effect some low level changes to the
structure of the fitted model object.Value
An object of class glm
with negative binomial family. The theta
parameter is then fixed at its present estimate.See Also
glm.nb
, negative.binomial
, glm
Examples
data(quine)
quine.nb1 <- glm.nb(Days ~ Sex/(Age + Eth*Lrn), data=quine)
quine.nbA <- glm.convert(quine.nb1)
quine.nbB <- update(quine.nb1, . ~ . + Sex:Age:Lrn)
anova(quine.nbA, quine.nbB)