R help - Mar 2008 - Stepwise Multiple Regression

Dear R,
I am using stepwise multiple glm to select a subset of variables using the step
command. My question is how do you calculate the percentage variance for each
parameter in the reduced model. An example of my code thus far is,

fit<-glm(Abalone~offset(Area)+Sessile invertebrates+Bare rock+ NCA +
Encrusting red algae, family = poisson ())

step(fit)

fit1<-glm(Abalone~offset(Area)+Bare rock+NCA+Encrusting red algae,
family=poisson())

Thanks in advance
Beth Strain


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Dear R,
> I am using stepwise multiple glm to select a subset of variables using the
step command. My question is how do you calculate the percentage variance for
each parameter and the cumulative percentage variance for all of the combined
parameters in the reduced model.
> Thanks in advance
> Beth Strain
> 
> 
>
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