Lok Wong <[email protected]> asks:
> After I estimated a multinomial logit model, I wanted to calculate
> the marginal effects..and I used
> - mfx -....However, it took forever to do that...After I stopped
> it, STATA
> said that "fail in calculating second derivative, no standard
> deviation reported"...Why this happened? How to solve it?
The error message is due to the fact that mfx computes derivatives numerically and
for some reasons the computations broke down.
A possible solution is the use of my program -margin- that is faster than mfx.
You can download it using net-aware Stata by typing
net from http://www.bke.hu/bartus/stata
etc.
Tamas
------------------------------------------------
Tamas Bartus, PhD
Assistant Professor, Department of Sociology and Social Policy
Budapest University of Economic Sciences and Public Administration
1093 Budapest, Fovam ter 8.
Phone: +36-1-217-51-72 Fax: +36-1-217-44-82
Homepage: http://www.bke.hu/bartus
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