st: Super-Columns with Esttab

[metoka2@gmx.de]

Dear members,

this is my first post, so I hope it works. I am using estpost and esttab to export results from two-sample t-tests in a rtf-file, so that I can use the output in a word file. I am a stata beginner and also not very familiar with the estout package. 
I tried to add super-columns above the names of my columns, but I couldn't figure out how to do it. I hope someone can help me.

So far, my code looks like this:

sysuse auto
estpost ttest price mpg trunk, by(foreign)
esttab using "myFileInRtfFormat.rtf", cells("N_1 mu_1 N_2 mu_2 b(star) se") ///
	noobs nonumber nomtitle modelwidth(8 8 7 8 8 8) replace

I want to add the super-column "Domestic" above the columnnames N_1 and mu_1 (the super-column name "Domestic" should only be shown once), and I want to add the super-column "Foreign" above the columnnames N_2 and mu_2 (also just once).

I tried to add the super-columns with the following code:
equations(1) unstack eqlabels(Domestic Foreign)
But only "Domestic" is added then.

How can I add Domestic and Foreign above the column names at the specific positions? 


Thank you very much for your help!

Metoka
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