Dear all I'm using proc logistic to calculate odds ratio. variable: ev =1 (success) or 0 treatment: A, B, C. I would like to calculate odds ratio to compare the odds for treatment A and B, treatment A and C, treatment B and C. First I tried running three logistic as follow: Proc logistic data=sample; where treatment in ('A' 'B'); class treatment; model ev (EVENT='1')= treatmnet; run; and so on for the other odds. Then I tried with: proc logistic data=sample class treatment; model ev (EVENT='1')= treatmnet; run; But what I obtain is the odds ratio for only two comparison. I notice that the odds ratio and the confidence interval are the same in the two cases, but the p-value is different. What can I do to calculate all the odds ratio I need in the correct way? Thank in advance for any answer
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