I am doing a Logistic regression on survival status (0=alive,1= dead) with 'proc logistic' on two categorial variables : urgency (0 = No , 1 = yes ), conscious(0=awake , 1=unconscious, 2 =coma). The data is in table form; an observation for every row (total 200 rows) eg:
1 1 2
0 1 1
However, I am not getting it right because from the output it says 5 unique profiles which can't be right since there should be 2 x 3 =6 unique profiles : two choices for the variable 'urgency' and three choises for the variable 'conscious'. When i do the logistic regression on survival status on only one of these variables then it gives 2 and 3 unique profiles, which i would expect.
Can someone explain why I am not getting it right:
proc logistic data =mydata;
model surv = urgency conscious /scale=none aggregate;
run;
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