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glm2
2011 Nov 07
2
logistric regression: model revision
...del to my dataset. I removed the squared term in the second version of the model, but my model output is exactly the same.
Model version 1: GRP_GLM<-glm(HB_NHB~elev+costdis1^2,data=glm_1,family=binomial(link=logit))
summary(GRP_GLM)
Model version 2: QM_1<-glm(HB_NHB~elev+costdis1,data=glm_2,family=binomial(link=logit))
summary(QM_1)
The call in version 2 has changed:
Call:
glm(formula = HB_NHB ~ elev + costdis1, family = binomial(link = logit),
data = glm_2)
But I’m getting the exact same results as I did in the model where costdis1 is squared.
Any ideas what I might do to c...