Marc,
I would start by looking for something called meta-analysis. In addition
to looking at p-values, you might also want to examine effect-sizes.
Finally, if you have access to the Cochrane Collaboration
(http://www.cochrane.org/), you might want to look there as well.
Regards
[EMAIL PROTECTED] wrote:
>
> Hello from Germany,
> as a part of my dissertation in medicine, I have
> to summarize some results of clinical trials.
> My question: By summarizing the results
> (percentage differences of certain parameters),
> how can I regard for the different p-values
> (which are calculated with different tests in the
> trials). Is it possible to form something like a
> weighet mean with the p-values and the sample
> sizes in the trials to generate an common effect
> size of the different results in the trials?
>
> Thanks for your comments,
> Marc
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
--
Timothy Victor
[EMAIL PROTECTED]
Policy Research, Evaluation, and Measurement
Graduate School of Education
University of Pennsylvania
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