st: question about subdue multiple dummy variables

["Ziyang Wang" <wzmartin@ust.hk>]

Dear all,

I'd like to ask a question about dummy variables, I have 11 dummy variables which result from the interaction of two dummies, one with 3 categories and the other with 4 categories. I like to know how to subdue those dummies in the regression output? Something like absorb option in areg. Anyone knows? Many thanks!

Best,

Martin



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