Hello Everyone 🙂 , I run a logistic regression on my data and I have come across a quasi complete separation error...(understandable because there are no "gravite = 1 or 2" in the response =0 (see proc freq below) So, I tried Firth logistic option that fixed the separation issue ...but I still get extrem odd ratio. am I missing something and.. can I fix it? Thank you very much😊 here is my data set : outcome "decision" : 0 or 1 var "gravite" categorical : 1,2,3,4,5 var "formation' categorical : 0, EM1, EM2, EM3 proc logistic data = work2 descending; class gravite (ref='5')/param =ref; class formation (ref='0')/param=ref; model decision = gravite formation/ firth ; run;
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