petretta at unina.it
2014-Apr-16 15:30 UTC
[R] interpreting weight in meta-analysis of proportion
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)) 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%. Any suggestion is welcome. -- Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy
Michael Dewey
2014-Apr-17 11:43 UTC
[R] interpreting weight in meta-analysis of proportion
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