Power Calculations anyone?

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Article #24654

#24654

From: Brian Martin
Date: Wed, 03 Feb 1988 20:14

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Can someone provide me a pointer to software that does "Cohen's Power
Calculations" on the Mac?  How about a set of Excel macros?  If necessary,
I'll write the macros myself, but was hoping that someone might already have
done that.  For the curious, power calculations allow you to estimate the
minimum sample size necessary when doing research, e.g., if I have a health risk
behavior reduction research project, how many participants do I need in the
study in order to demonstrate that a decrease in health risk behaviors
from 40% to 30% in the sample population is statistically significant and
hopefully attributable to the intervention.

Regards,
	Brian K. Martin, M.D.
	3420-A Hinahina Street
	Honolulu, Hawaii 96816
	(808) 735-5661

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!mit-eddie!ll-xn!ames!ucsd!sdcsvax!nosc!humu!uhccux!martin
From: martin@uhccux.UUCP (Brian Martin)
Newsgroups: comp.sys.mac
Subject: Power Calculations anyone?
Message-ID: <1520@uhccux.UUCP>
Date: 3 Feb 88 20:14:11 GMT
Reply-To: martin@uhccux.UUCP (Brian K. Martin, M.D.)
Organization: U. of Hawaii, Manoa (Honolulu)
Lines: 19
Keywords: power calculations, biostatistics, epidemiology