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Re: st: Power analysis in STATA


From   martine etienne <[email protected]>
To   [email protected]
Subject   Re: st: Power analysis in STATA
Date   Tue, 14 Jun 2011 14:03:19 -0700 (PDT)

thank you. Actually, I want to calculate sample size and power for a study that 
I'm working on, following a cohort over 12months for time to treatment failure. 
My population is 3000 but I'm a bit confused as to where to go from there. I 
thought calculating using STATA might help. Any additional input will be greatly 
appreciated. 

Martine



----- Original Message ----
From: David Radwin <[email protected]>
To: [email protected]
Sent: Tue, June 14, 2011 4:25:33 PM
Subject: RE: st: Power analysis in STATA

Agreed, and also see the related Stata Journal article, both by Roger
Newson:

http://www.stata-journal.com/article.html?article=st0074

David
--
David Radwin
Research Associate
MPR Associates, Inc.
2150 Shattuck Ave., Suite 800
Berkeley, CA 94704
Phone: 510-849-4942
Fax: 510-849-0794

www.mprinc.com


> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of Richard Goldstein
> Sent: Tuesday, June 14, 2011 12:44 PM
> To: [email protected]
> Subject: Re: st: Power analysis in STATA
> 
> yes; e.g., download -powercal- (use -findit-) and review the help file
> 
> better advice could be given if you explained what you wanted
> 
> Rich
> 
> On 6/14/11 3:24 PM, martine etienne wrote:
> > Dear Statalisters,
> > Are there any graphical approaches to power analysis using STATA?
> > thanks,
> > Martie
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