Message-ID: <5378b715-5d14-3239-8fee-318611b07e30@dewey.myzen.co.uk>
Date: 2020-12-05T16:16:24Z
From: Michael Dewey
Subject: [R-meta] Meta-analysis with only p.values and N?
In-Reply-To: <8c08aaf9-f484-4c5d-a063-779b9d309cce@email.android.com>
Those methods have their uses but if Raquel wants a forest plot I do not
think they generate the required effect size with its confidence interval.
Michael
On 05/12/2020 14:19, t.saueressig at gmx.de wrote:
> Dear Raquel,
>
> in Boerenstein et al. 2009 (Handbook) there is a description of a method
> to combine p values for a pooled p value. Maybe that would be a solution?
>
> Regards,
>
> Tobias Saueressig
>
> Am 05.12.2020 12:21 schrieb Michael Dewey <lists at dewey.myzen.co.uk>:
>
> Dear Raquel
>
> If you have the means or the difference in means as well then you can
> back-calculate what you need but if not I am afraid I can see no way
> forward although other smarter list readers may be able to help.
>
> Michael
>
> On 04/12/2020 18:45, Raquel Cumeras Olmeda wrote:
> > Dear all,
> >
> > We are trying to do a meta-analysis of metabolomics data.
> > In metabolomics, we study the changes of the concentrations of
> compounds in biofluids.
> >
> > So, for the data I am trying to analyze I have the p.value of the
> relevant compounds and the N of the patients and controls.
> >
> > We tried to do a forest plot, but we don't know how to do it with
> only the p.value and the N.
> >
> > Any help would be more than welcome!
> >
> > Raquel Cumeras
> >
> >
> -----------------------------------------------------------------------------------------------
>
> > Raquel Cumeras, Ph.D.
> > Marie Curie Postdoctoral Research Fellow
> > - Institut d'Investigaci? Sanit?ria Pere Virgili (IISPV, ES).
> Metabolomics Platform<http://metabolomicsplatform.com/>.
> > - University of California Davis (UC Davis, USA). Fiehn lab.
> > - Affiliated to Universitat Rovira i Virgili (URV, ES) and
> CIBERDEM (ISCIII, ES).
> >
> > website: https://raquelcumeras.wordpress.com/
> > e_mail: raquel.cumeras at iispv.cat<mailto:raquel.cumeras at iispv.cat>
> // rcumeras at ucdavis.edu<mailto:rcumeras at ucdavis.edu> //
> raquel.cumeras at urv.cat<mailto:raquel.cumeras at urv.cat>
> > ORCiD: 0000-0003-4663-4247
> > Pronouns: she/her
> >
> -----------------------------------------------------------------------------------------------
>
> >
> >
> > [[alternative HTML version deleted]]
> >
> >
> >
> >
> > _______________________________________________
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> > R-sig-meta-analysis at r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-meta-analysis
> >
>
> --
> Michael
> http://www.dewey.myzen.co.uk/home.html
>
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