Hello all,

This seems like a simple question.

I wanted to compare coefficients from two models estimated using fracreg command (fractional logit).

*******
fracreg logit quality robots if industry==1

est store ind1

fracreg logit quality robots if industry=2

est store ind2

suest ind1 ind2

*******

I get this error message:

"ind1 was estimated with a nonstandard vce (robust)"


I found that this is because fracreg by default uses vce(robust), while suest does not permit vce(robust), nor vce(jackknife) or vce(cluster) - the other vce options available with fracreg.
I was wondering sure if there was a way to run fracreg by changing the robust option, or an alternative way to compare the coefficients.

Regards,

Joseph Bakker