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[no subject]
Best wishes,
Paul T Seed, Senior Lecturer in Medical Statistics,
Division of Women's Health, King's College London
Women's Health Academic Centre, King's Health Partners
(+44) (0) 20 7188 3642.
> ------------------------------
>
> Date: Tue, 1 Apr 2014 11:57:12 +0000
> From: "Pesola, Francesca" <[email protected]>
> Subject: st: sampsi for repeated measure t test
>
> Dear Listers,
>
> I need to run a post-hoc sample size calculation for a repeated measure t-test to
> compare baseline and follow-up scores. My data was collected across 6 teams
> which I am treating like clusters (with ICC = .017) and the n1:n2 = 75.
>
> Can I calculate the sample size using:
>
> sampsi 3 3.67, sd1(0.79) sd2(0.75) p(0.9) r(.75)
> sampclus, rho(0.017) numclus(6)
>
> where 3 and 3.67 are my actual means at baseline and follow-up and sd1 and
> sd2 are the actual sd at baseline and follow-up.
>
> Is this OK?
>
> Thanks,
> Francesca
>
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