st: Estout results of two SURs with the same regressors

[Francesco Scervini <francesco.scervini@unito.it>]

Dear Statalisters,

I make two SURs using -sureg-.
The dependent variables are pre-tax prices of goods 1 and 2 in the 
first SUR and post-tax prices of goods 1 and 2 in the second SUR.
Independent variables are the same in both SURs and both equations (see 
the example hereafter).

When I -estout- the results, something strange (to me) occurs: results 
from the first equations of the SURs are shown in the same lines (as I 
expected, since regressors are the same), while results from the second 
equations are shown in different lines (that puzzles me).

Here is a minimum working example (with meaningless variables):

sysuse nlswide1, clear
sureg (wage68 count68 collgrad68) (hours68 count68 collgrad68)
est store sur1
sureg (wage88 count68 collgrad68) (hours88 count68 collgrad68)
est store sur2
estout sur1 sur2, eqlabels("Wage" "Hours") mlabels("dep:1968" 
"dep:1988")

that produces the following table:

--------------------------------------
                 dep:1968     dep:1988
                        b            b
--------------------------------------
Wage
count68          .0011111    -.0028053
collgrad68       3.639574     4.791805
_cons            3.893202      7.59611
--------------------------------------
Hours
count68           .005314
collgrad68       7.156666
_cons            34.93033
--------------------------------------
hours88
count68                      -.0006587
collgrad68                    7.299064
_cons                         35.65841
--------------------------------------


I am using Stata 12.1 on MacOS X and -estout- version 3.13

Any ideas?

Thanks
--
Francesco Scervini
francescoscerviniphd.wordpress.com

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