Re: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances

much difference. I'm just beginning to wonder if there is another way. I'll think about it some more best wishes Branwen From: Viechtbauer Wolfgang (STAT) [wolfgang.viechtba...@maastrichtuniversity.nl] Sent: 27 August 2014 17:30 To: Owen, Bran

[R] Metafor -can't calculate heterogeneity with non-positive sampling variances

e sampling variances. Is there any way around this? thanks Branwen From: r-help-boun...@r-project.org [r-help-boun...@r-project.org] on behalf of r-help-ow...@r-project.org [r-help-ow...@r-project.org] Sent: 27 August 2014 13:36 To: Owen, Branwen Subject: M

[R] metafor - multivariate analysis

Dear Metafor users, I'm conducting a metaanalysis of prevalence of a particular behaviour based on someone elses' code. I've been labouring under the impression that this: summary(rma.1<-rma(yi,vi,mods=cbind(approxmeanage,interviewmethodcode),data=mal,method="DL",knha=F,weighted=F,intercept=T