Yes. Proc, class, and model statements. Thanks for catching that cut and paste error, PG. I was able to deduce that the appropriate code was what you provided: test intercept: intercept1=intercept2=intercept3 but I'm not sure how I can re-code my variables so that SAS recognizes that 'intercept1' is, say the intercept of hs_q01 for EBF duration 1 and intercept 2 is the intercept of hs_q01 EBF duration 2. I'm getting the error message that the variable is not in my model, which is what I expected. Is this because i've used class statements instead of dummy variables? I was thinking of outputting my intercepts into another database and then re-running the code, but my SAS/statistics knowledge is a bit lacking.
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