Hello Statalist,
I have used a heckman twostep selection process. After employing the
test I get 2 tables, the selection and the regression table. What
puzzles me, that in the one of the tables STATA gives me the
coefficient but does not report a standard error, confidence intervall
and the z value for a dummy but does so in the other regression table.
I could not figure out what the problem might be, does anybody know
any help? Also does that mean that I cannot interpret the
coefficients?
Thank you for your help
With kind regards,
Georg Wernicke
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