Yes. Thank you! ... View more

Okay. I'll check this.   Thanks, Rick, Darina Proshenska ... View more

  I have found my error. I have put all my variables into class option, but it is not possible if they are not with the same reference. The code works fine now.   proc logistic data=MaBib.MaTable plots(only)=oddsratio(range=clip) ; class EVA (param=ref ref='1') ; model categoryKarasek2 = EVA / covb ; effectplot / individual polybar ; title 'Multiple Response Karasek Category Experiment' ; run ; ods graphics off ;   Many thanks, Darina Proshenska ... View more

Thank you, StatDave_sas, Now I am having this message error:  INVALID REFERENCE VALUE FOR EVA (EVA is the last variable in the model). Do this mean that I need to specify the reference for each variable in the model option?   Many thanks, Darina Proshenska ... View more

Thank you for your response and assistance!   I've tried a code example for a cumulative logit model (from the section logistic regression for ordered categories), but I cannot find an explanation for the options proposed and I don't understand the message error on SAS. Would you mind take a look please?   This is the message error for the oddsratio line: ERROR 22-322: Syntax error, expecting one of the following: :. / .  There is also a freq option as FREQ freq ; but I don't understand when I have to create this variable freq and what it is supposed to do.   Please find enclosed herewith the sas code.   Many thanks, Darina Proshenska ... View more

I will try this. Thank you for your help!   Darina ... View more