glm.convert {MASS} R Documentation

## Change a Negative Binomial fit to a GLM fit

### 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.

### Usage

glm.convert(object)


### Arguments

 object An object of class "negbin", typically the output from glm.nb().

### 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.

glm.nb, negative.binomial, glm
quine.nb1 <- glm.nb(Days ~ Sex/(Age + Eth*Lrn), data = quine)