Is it possible to do in SAS a Poisson regression with endogeneity and instrumental variables? Also, how is it possible to test which variable is endogenous?
I found codes where procs genmod, countreg deal with Poisson regressions, but couldn't find info about endogeneity and instrumental variables.
I found some infor about endogeneity and instrumental variables in proc syslin, but not sure how to apply it to Poisson...
Thanks
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