Hello SAS community, My dependent variable is a positive integer that I am modeling with Poisson regression. I have two instrumental variables that I need to incorporate into my model as well. I am not sure how to proceed with this. I know that proc qlim allows for IV analysis but I have only seen examples using logistic regression. This procedure doesn't work for Poisson, correct? Do I need to use non-linear two stage least squares regression to incorporate these instruments? Thank you.
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