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Re: st: comparison of means


From   Richard Goldstein <richgold@ix.netcom.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: comparison of means
Date   Tue, 12 Apr 2011 15:19:19 -0400

you don't say exactly what you want to do, but you can use regression to
do a t-test (e.g.); make the values your left-hand-side variable and the
only predictors are the dummy for group and the constant; the result for
the dummy will then be exactly the same as what you would get from a
t-test; you can also correct for unequal variances (vce(robust) option)
and to other things, and, of course, regress allows for weights

Rich

On 4/12/11 3:09 PM, Abelev, Melissa wrote:
> Hi -
> 
> I'm trying to do some simple descriptive statistics.  I want to do a
> two-group comparison of means.  The trick is that the data are weighted,
> and stata's "classical tests of hypotheses" doesn't allow me to do it.
> I found a journal article on a relatively complex calculation to do it
> by hand.  I'm hoping stata has a way to do this.  Is there?
> 
> - Melissa
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