Dear all,
If I am interested in computing an equivalence limit of 20% around the diference of two proportions. Is this simply (-0.2, 0.2) or do I have to compute it based on the observed data and sample size (If yes, how)?
Thank you in advance,
Ricardo
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
--- On Fri, 8/14/09, Ricardo Ovaldia <[email protected]> wrote:
> From: Ricardo Ovaldia <[email protected]>
> Subject: Re: st: Re: equivalence test
> To: [email protected]
> Date: Friday, August 14, 2009, 11:34 AM
> Joseph Coveney <[email protected]>
> wrote:
>
> >>You can use either -cs-, which is official, or
> -rdci-, [...]
> >>You would construct the confidence interval and
> check to see whether
> >>both lower and upper confidence bounds fall within
> the limits specified >>for accepting the alternative
> hypothesis of therapeutic equivalence.
>
> Thank you.
> As Joseph suggested, I used -rdci- and obtained an:
> Agresti-Caffo 95% CI: -0.299 0.067
>
> If I am interested in an equivalence limit of 20%, do I
> compare the above 95%CI to (-0.2, 0.2)? Or how do I compute
> the correct equivalence limits?
>
> Thank you,
> Ricardo
>
>
> Ricardo Ovaldia, MS
> Statistician
> Oklahoma City, OK
>
>
> --- On Thu, 8/13/09, Ricardo Ovaldia <[email protected]>
> wrote:
>
> > From: Ricardo Ovaldia <[email protected]>
> > Subject: Re: st: Re: equivalence test
> > To: [email protected]
> > Date: Thursday, August 13, 2009, 12:05 PM
> > previously I asked:
> >
> > > Is there a way to perform an equivalence test for
> a
> > 2x2 table.
> > > Treatment (0,1) vs. Outcome(0,1)?
> >
> > I found -equip- by Richard Goldstein. Does this
> program
> > work correctly?
> > If yes, what is the meaning of test1 and test2?
> > if no, are there any alternatives (other free
> software)?
> >
> > Thank you,
> > Ricardo.
> >
> > Ricardo Ovaldia, MS
> > Statistician
> > Oklahoma City, OK
> >
> >
> > --- On Wed, 8/12/09, Ricardo Ovaldia <[email protected]>
> > wrote:
> >
> > > From: Ricardo Ovaldia <[email protected]>
> > > Subject: st: Re: equivalence test
> > > To: [email protected]
> > > Date: Wednesday, August 12, 2009, 6:01 PM
> > > Is there a way to perform an
> > > equivalence test for a 2x2 table.
> > > Treatment (0,1) vs. Outcome(0,1)?
> > >
> > > Thank you,
> > > Ricardo
> > >
> > > Ricardo Ovaldia, MS
> > > Statistician
> > > Oklahoma City, OK
> > >
> > >
> > >
> > >
> > >
> > > *
> > > * For searches and help try:
> > > * http://www.stata.com/help.cgi?search
> > > * http://www.stata.com/support/statalist/faq
> > > * http://www.ats.ucla.edu/stat/stata/
> > >
> >
> >
> >
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
>
>
>
>
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
