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Re: st: Standardized Response Mean. Does Stata calculate this?


From   Sergio Correia <sergio.correia@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Standardized Response Mean. Does Stata calculate this?
Date   Tue, 15 Nov 2005 14:29:03 -0500

According to:
http://www.qualitymetric.com/sf36/qolr_art2.pdf

The SRM was calculated by dividing the observed
change score of each MSQ scale by the standard
deviation of the change score [36]. The SRM
provides a more effective summary of the signal to
noise ratio than SES because it avoids the standard
error of the mean in the denominator and is
therefore less influenced by sample size

But I'm not still very sure of what that means.

Sergio

On 11/15/05, Nick Winter <nw53@cornell.edu> wrote:
> Given the name (ES-II), it sounds like an effect size of some sort.
>
> That would suggest that it is NOT the t-test from the difference of
> means (that is the difference divided by the standard error of the
> difference), but rather the difference of means divided by the
> standard *deviation* of the difference.  That latter is derivable
> from the results of t-test; I don't know if anyone has packaged it.
>
>
> I share Nick C's amusement, though.  I suppose as long as many
> asterisks are attached to the relevant number, people downstream will
> probably be satisfied.
>
> --Nick Winter
>
> At 02:07 PM 11/15/2005, you wrote:
> >This is very intriguing as a little piece of
> >scientific sociology. If neither the client
> >nor the analyst is clear what is meant, why
> >not provide what seems sensible given the
> >problem and the data? Is anyone downstream
> >going to object that you provided the wrong answer?
> >
> >Nick
> >n.j.cox@durham.ac.uk
> >
> >Donald Spady
> >
> > > I am unsure if that is what is meant by a Standardized
> > > Response Mean.  I hate to show my ignorance about this
> > > but I am flying in the dark and the person who asked me
> > > about it wasn't all that clear either.
> >
> >Alan Neustadtl
> >
> > > Isn't this simply the t-statistic from a difference of means test?  If
> > > so, -help ttest- should get you going.
> >
> >Donald Spady
> >
> > > Is there any way in Stata to calculate a Standardized
> > > Response Mean?  I think it is also known as ES-II. It is
> > > the difference between means divided by the standard
> > > deviation of the difference. I could find nothing about it
> > > using -findit-.
> >
> >*
> >*   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/
>
> ________________________________________________________
> Nicholas J. G. Winter                     607.255.8819 t
> Assistant Professor                       607.255.4530 f
> Department of Government              nw53@cornell.edu e
> Cornell University        falcon.arts.cornell.edu/nw53 w
> 308 White Hall
> Ithaca, NY 14853-4601
>
>
> *
> *   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:
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*   http://www.ats.ucla.edu/stat/stata/



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