st: Is SUREG's log-likelihood concentrated?

[Casey Quinn <cq1@york.ac.uk>]

I'm (basically) comparing a multivariate Probit (using the mvprobit 
command) with a method employing inverse distributions and the sureg 
command for their subsequent multivariate normal distribution. Even 
using normal inversesof univariate probit probabilities however my sureg 
log-likelihoods are a good deal higher/less negative than the mvprobit 
ones, which is unexpected. I'm wondering whether the sureg perhaps uses 
concentrated log-likelihoods. The manual doesn't cover this, but does 
anybody out there have any information, or a similar experience?

Casey Quinn
Centre for Health Economics
University of York
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