Hi Patrick, I have actually read your paper before and I am aware of the objection. I have also implemented the "weighted Stouffer's" in R. I nevertheless want to try the weighted fisher's if possible (if for no other reason than curiosity)
Andreas Cederfeldt On Wed, Jun 25, 2008 at 12:53 PM, Patrick Burns <[EMAIL PROTECTED]> wrote: > Are you sure you want to use Fisher's method? > > http://www.burns-stat.com/pages/Working/perfmeasrandport.pdf > page 13 shows an example where Fisher's method > is not attractive, but Stouffer's method gives reasonable > results. Weighting in Stouffer's method is straightforward. > > > Patrick Burns > [EMAIL PROTECTED] > +44 (0)20 8525 0696 > http://www.burns-stat.com > (home of S Poetry and "A Guide for the Unwilling S User") > > Andreas Cederfeldt wrote: > >> Hi, >> >> This is more of a general question than a pure R one, but I hope that is >> OK. >> I want to combine one-tailed independent p-values using the weighted >> version >> of fisher's inverse chi-square method. The unweighted version is pretty >> straightforward to implement. If x is a vector with p-values, then I guess >> that this will do for the unweighted version: >> >> statistic <- -2*sum(log(x)) >> comb.p <- 1-pchisq(statistic,2*length(x)) >> >> Has anyone written some R code for the weighted version? >> >> Regards, >> Anders Cederfeldt >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> >> >> >> > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
