st: suest with multinomial logit

[daphna bassok <dbassok@stanford.edu>]

> Hi-
>
> I am tying to use the "suest" command for the first time, and I 
> wanted to make sure that I am doing so appropriately.
>
> I am running a multinomial logit model predicting child care 
> choice.  I run the exact same model separately for several racial 
> groups (white, black, Hispanic).
>
> I'd like to do two things...
>
> 1,  The first is compare coefficients across the different 
> models.  Is it appropriate to use suest this way?
>
> Here is my code (after running mlogit & storing estimates):
>
> # delimit ;
> local estimates "black_est   hisp_e_est   hisp_ne_est " ;
> foreach x of local estimates { ;
> foreach var of varlist  var1-var10 { ;
> test [white_est_center]`var' - [`x'_center]`var' = 0 ;
> } ;
> } ;
>
> I believe this is testing whether each of the coefficient is 
> significantly different between the white model and another group... 
> when comparing the "center" option to the omitted option.  I then 
> repeat this procedure for the other choices in the multinomial model.
>
> 2.  Is there a way to use suest to simultaneously test whether the 
> full set of coefficients in the white model are significantly 
> different from the full set of coefficients for say the black model?
>
> Thanks in advance for any advice you can provide.
>
> Daphna
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