I've been trying to replicate the results of a logistic regression programmed using Proc LOGISTIC with GENMOD. I believe the options and model specification are the same but some of my parameter estimates are differing around the 4th decimal. The code using Proc LOGISTIC is:   proc logistic data = mydata descending;   class treat (param = ref ref = "A") country / param = glm;   model resp = treat country var1; run;   Code for Proc GENMOD is:   proc genmod data = mydata descending;   class treat (param = ref ref = "A") country / param = glm;   model resp = treat country var1 / dist = bin link = logit; run;   Is there any reason why the results would differ using the above code? I'm using SAS v9.4.   Thanks   ... View more