In the first MODEL statement, the ODDSRATIO option evaluates the odds ratios where the continuous variables are set to their mean values. In the second MODEL statement, the ODDSRATIO( at ... ) syntax evaluates the oddsratios at the specified values of the continuous variable. These are not the same values. For example, first_mos_begin=18.588 and age=19.791 are different values than in the first call.
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