Manually Weight a Binned Variable in R Logistic Regression

Question

I am looking to do credit scoring using logistic regression in R and I am stumped on this...

If I have a categorical variable "Residence" with factors "Own", "Rent" and "Other" and I want to set the weight of "Other" to zero so that it is neutral in the model what would be the best way to do this in glm in R?

We can do this manually using Fico Model Builder but I'm not sure how to do it in R.

Thanks.

Answer 1

If you want to omit cases with Residence=="Other" then use the subset argument to glm().

 logmod <- glm(binaryvar ~ covar1 + Residence, data=dat, 
               subset= Residence =="Other", family="binomial")