Re: [R] multivariate meta-analysis with the metafor package

2009-11-15 Thread Viechtbauer Wolfgang (STAT)
ond floor) 6200 MD Maastricht, The Netherlands Debyeplein 1 (Randwyck) Original Message From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of antonio.gasparr...@lshtm.ac.uk Sent: Friday, November 13, 2009 19:47 To: r-help@r-project.org Subject: [

[R] multivariate meta-analysis with the metafor package

2009-11-13 Thread Antonio.Gasparrini
Dear Wolfgang Viechtbauer and R users, I have few questions regarding the development of the package 'metafor. As you suggested , I post to the R-help mailing list. I read you're planning an extension of this method to the multivariate case. I think it would be a useful tool. I'm currently perf

[R] Multivariate Meta-analysis

2009-09-14 Thread Yan Li
Hi, all I happen to a question about multivariate meta-analysis. I found the function of mvmeta in gap package, but I don't know for sure how to construct a covariance matrix. Now, I have 20 studies, each having 6 coefficients for the basis functions from an additive model. I can extract the covar