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Re: st: Power analysis after the fact


From   Ricardo Ovaldia <ovaldia@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Power analysis after the fact
Date   Thu, 21 Apr 2005 11:21:13 -0700 (PDT)

Thank you Scott and Neil. Is just what I was looking
for.

Ricardo,



--- SR Millis <srmillis@yahoo.com> wrote:
> Hoenig & Heisey discuss the fundamental flaw in post
> hoc power analysis in their paper, "the abuse of
> power" (The American Statistician, 2001, 55(Feb),
> pp.
> 19-24).
> 
> SR Millis
> 
> 
> --- Ricardo Ovaldia <ovaldia@yahoo.com> wrote:
> > Dear All,
> > 
> > We were recently asked by an anonymous reviewer to
> > include a power analysis on a manuscript submitted
> > to
> > a prominent medical journal. I always understood
> > that
> > such power analyses were not recommended (i.e. you
> > should not do them) but I am not sure why. Can
> > anyone
> > please cast some light on this issue?
> > 
> > Thank you,
> > Ricardo.
> > 
> > 
> > 
> > Ricardo Ovaldia, MS
> > Statistician 
> > Oklahoma City, OK
> > 
> > 
> > 	
> > 		
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> 
> Scott R Millis, PhD, MEd, ABPP (CN & RP)
> Director of Research - Dept of PM&R
> Wayne State University School of Medicine
> Rehabilitation Institute of Medicine
> 261 Mack Blvd
> Detroit, MI 48201
> 
> Tel: 313-993-8085
> Fax: 313-745-9854
> 
>
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Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

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