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st: Re: power analysis for ABA design


From   Jeffrey Simons <jsimons@usd.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: power analysis for ABA design
Date   Mon, 06 Sep 2004 17:00:16 -0500

I'll look into this. Thank you for the information and reference.



> ------------------------------
> 
> Date: Sat, 4 Sep 2004 13:42:07 -0500
> From: David Airey <david.airey@vanderbilt.edu>
> Subject: re: st: Re: power analysis for an ABA treatment design
> 
>> I am trying to do a power analysis for an experiment that will have a
>> 2-level between subjects factor and then a 3-level within subjects
>> factor
>> (i.e., baseline, intervention, baseline) for an ANOVA analysis. Could
>> anyone
>> give me some advice about this. I looked at several packages (sampsi,
>> powercal, etc.) and am having difficulty figuring it out.
> 
> Al Feiveson wrote a nice little Stata Journal article on determining
> power in any given model by simulation. This is most flexible.
> 
> The Stata Journal 2 Number 2
> 
> Power by simulation: This paper describes how to write Stata programs
> to estimate the power of virtually any statistical test that Stata can
> perform. Examples given include the t test, Poisson regression, Cox
> regression, and the nonparametric rank-sum test.
> 
> - -Dave
> 
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> ------------------------------
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