Fine ! Many many thanks!
Mario -----Messaggio originale----- Da: Bernd Weiss [mailto:bernd.we...@uni-koeln.de] Inviato: venerdì 18 aprile 2014 15.58 A: petre...@unina.it; R-help@r-project.org Oggetto: Re: [R] interpreting weight in meta-analysis of proportion On 18.04.2014 13:02, petre...@unina.it wrote: > Prof. Dewey, sorry for the trivial question and many thank for the replay. > > >> Using which package? > > In this case I used the meta package, but I know that for all but the > DerSimonian-Laird method the R function rma.uni of R package metafor > is called internally. > >> What did you expect the weights to sum to, I wonder. > > I think that, to better explain the influence of single study in > pooling the effect size, the weight are presented as percentage of the > sum of total weight of each study, but I ask for a confirm. > Nevertheless, I ask if it is possible to obtain for each study the > value of the absolute weight, other than the relative weight, or at > least the absolute value of the sum of the weights. > ## This is an example from the examples-section res <- metaprop(4:1, c(10, 20, 30, 40), comb.fixed=FALSE, comb.random=TRUE) ## Object res contains a lot of interesting information ## Open ?metaprop and read the section on "values" str(res) ## Obtaining the random-effects weights res$w.random ## Calculating relative weights manually res$w.random/(sum(res$w.random)) HTH, Bernd ______________________________________________ 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.
