RE: st: RE: exact (more decimals) p values ?

[David Airey <david.airey@Vanderbilt.Edu>]

> In my experience, the need for extra decimal places in P-values is
> usually motivated by multiple comparisons. For instance, if you are
> doing a genome scan of 10,000 polymorphism associations, then, on
> average, one of these polymorphism associations will have a sample
> P-value of P<=0.0001, even if all corresponding population  
> associations
> are zero.
This is my experience too. We do genome scans against microarray  
phenotypes, so multiplicity of tests becomes ridiculous. There should  
be some option to display p values in scientific notation.

--
David C. Airey, Ph.D.
Research Assistant Professor

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