目前是有主回归x和y,想再用一个did做内生性检验,但不知道怎样设计交乘项和x的关系 Stata专版 经管之家 Template




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tomski目前是有主回归x和y,想再用一个did做内生性检验,但不知道怎样设计交乘项和x的关系 stata专版 经管之家 coloring