st: xtmixed: comparing variable coefficients across models

["Steve" <drlead@prodigy.net.mx>]

We have two nested xtmixed models.  We'd like to compare the coefficients of 
common variables between the models to determine the effects of an added 
variable in one of the models on the other variable coefficients.  The added 
variable is a fixed effects variable and the random effects variables and 
correlation structure remain the same in both models.

-suest- will not work with -xtmixed- and -hausman- doesn't appear 
appropriate because we are unable to determine if one of the models is 
efficient and consistant and the Hausman test only gives a global 
chi-square.

Would someone please suggest how to do this?

Steve Rothenberg
CINVESTAV-IPN
Mérida, Yucatán
México


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