Thank you for your responses, I have actually created a FemaleMarried (= Female * Married) interaction variable before using the proc reg command. From my understanding, the command: test Female, FemaleMarried would test H0: b1 = b3. However, I am interested in testing H0: b1 + b3 = 0. Is there a way to do this in SAS? Also, I am running a similar model using the quantreg procedure, so I was wounding if I can apply the same test there? Thanks again for your help.
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