Hello guys, i am a little confused and a simple explanation will help here.
I ran these two codes. The second code is for the interaction model.
Variable names are "mi" and "sprob"
Proc logistic data = new descending; Model health = mi sprob; run;
Proc logistic data = new descending; Model health = mi sprob mi*sprob ; run;
I discovered that the Odds ratios was not displayed for 'mi' or 'sprob' in the interaction model when i ran it and i am wondering the reason why. The first code gave me an odds ratio but the second just didn't. Is there any theory for this? Either statistical or otherwise?
Thanks
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