[R] interpreting weight in meta-analysis of proportion

[Michael Dewey]

At 16:30 16/04/2014, petretta at unina.it wrote:
>Dear all,
>
>I use R 3.0 for Windows.
>
>I performed a meta-analysis of the prevalence (single proportion)
>reported in 14 different studyes using the command:
>
>res<-metaprop(case,n,sm="PFT", comb.fixed=FALSE, comb.random=TRUE,
>studlab<- paste(Study))

Using which package?


>print(res)
>
>A referee ask a brief explanation of the W-statistic reported in the
>results, in particular, why the summ of the individual weights of all
>the studies is 100%.

What did you expect the weights to sum to, I wonder.

>Any suggestion is welcome.
>
>
>--
>Mario Petretta
>Department of Translational Medical Sciences
>Naples University Federico II
>Italy
>
>

Michael Dewey
info at aghmed.fsnet.co.uk
http://www.aghmed.fsnet.co.uk/home.html