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I want to estimate a following two-stage multinomial logit model (the dependent variable has 3 categories) with an endogenous variable, and get the marginal effects. However, the following program doesn't work. I always get some error message as "insufficient observations to compute bootstrap standard errors
no results will be saved ".
Could you please check the problems for me ? Thank you very much!
The following is my program:
webuse sysdsn1, clear
regress ppd male nonwhite i.site age
predict double ppdhat, xb