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pitfall
2009 Feb 19
4
type III effect from glm()
Hi all,
This could be naivety/stupidity on my part rather than a problem with model output, but here goes....
I have fitted a fairly simple model
m1<-glm(count~siteall+yrs+yrs:district,family=quasipoisson,weights=weight,data=m[x[[i]],])
I want to know if yrs (a continuous variable) has a significant unique effect in the model, so I fit a simplified model with the main effect ommitted...
m2<-glm(count~siteall+yrs:district,family=quasipoisson,weights=weight,da...