Hey!  This is my code up to now:   proc freq data=123; table issr_id; where def=1; run;   I want to know the total number of issr_id with the condition def=1. But the Problem is, there are some issr_id with have more then one def=1.   How can I get the total number of issr_id with def=1, without issr_id with the same number are counted muliple times?      Hope you get my question. Thanks! ... View more

In my solution after the logit-regression the Maximum Likelihood Estimate is the standardmethod. Is it  possible to change to least-squares estimate and compare the difference between the two methods in the results? ... View more