st: LRtest with robust standard error

[Fran�ois Montagne <francois.montagne@cpdr.ucl.ac.be>]

Statalisters,

I estimate an ordered probit model with robust standard errors adjusted
for clustering.
LRtest seems to be  not appropriate since Stata ask for "force" 'option.
How to explain it? What kind of alternatives is offered here?

Thanks you very much.

Regards,

Fran�ois Montagne.


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