Re: [R] Games-Howell, Gabriel, Hochberg

From: Neil Shephard <nshephard_at_gmail.com>
Date: Thu 01 Dec 2005 - 22:59:34 EST


>Gabor Grothendieck <ggrothendieck@gmail.com> writes:
>
>> What would be nice would be an R routine that automatically
>> implements this flowchart.
>
>I'd recommend learning about p.adjust and the multcomp package
>*instead* of following the flowchart.

Another approach to correcting for multiple testing is implemented in the pacakge qvalue by Storey (see CRAN and also http://faculty.washington.edu/~jstorey/qvalue/).

Storey JD. (2002) A direct approach to false discovery rates. Journal of the Royal Statistical Society, Series B, 64: 479-498

Storey JD. (2003) The positive false discovery rate: A Bayesian interpretation and the q-value. Annals of Statistics, 31: 2013-2035

Storey JD, Taylor JE, and Siegmund D. (2004) Strong control, conservative point estimation, and simultaneous conservative consistency of false discovery rates: A unified approach. Journal of the Royal Statistical Society, Series B, 66: 187-205

(The references can be accesseed from the web-site)

HTH's

Neil

--
"The surest way to make a monkey of a man is to quote him."
 - Robert Benchley

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Received on Thu Dec 01 23:17:15 2005

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