请教各位,在进行多项logistic回归后,mlogtest,hausman base为什么不能用啊?首先mlogit之后,再进行IIA检验,显示:
Problem determining number of categories.
**** Hausman tests of IIA assumption
Ho: Odds(Outcome-J vs Outcome-K) are independent of other alternatives.
You used the old syntax of hausman. Click here to learn about the new syntax.
(storing estimation results as _HAUSMAN)
factor variables and time-series operators not allowed
r(101);
怎么办?


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