Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: Difference of means and t-test


From   Si Li <sl12@duke.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Difference of means and t-test
Date   Tue, 2 Jul 2002 17:54:04 -0400 (EDT)

Does this -foreach test need to assume independence between groups?

On Tue, 2 Jul 2002, Fred Wolfe wrote:

> At 04:40 PM 7/2/2002 -0400, you wrote:
> >Dear Stata users,
> >
> >I am trying to compare the differences in means on a list of variables
> >between participant and comparison group. After obtaining the difference
> >for each variable, I want to run a t-test and test for significance.
>
>
> You should look up the -foreach command
>
> foreach var of varlist a b c d etc{
>      ttest `var', by(group)
> }
>
>
> ----------------------------------------------------------------------------
> ------------------------
> Fred Wolfe                                                          Tel
> (316) 263-2125
> National Data Bank for Rheumatic Diseases         Fax (316) 263-0761
> Wichita,
> Kansas                                    fwolfe@arthritis-research.org
> ----------------------------------------------------------------------------
> -------------------------
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>
>
>

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index