multivariate meta-analysis with the metafor package
Dear Antonio, Yes, I am currently working on these extensions. It will take some time before those functions are sufficiently tested and documented and can become part of the metafor package. My goal is to do so within the next year, but I cannot give any specific date for when this will be finished. To answer your second question, I will have to take a closer look at the mvmeta command (I wasn't aware of this command until you mentioned it). I will try to do so when I get a chance. I guess an immediate advantage of an "rma.multi" (or whatever it will be called) command is that it will run under R =) Best, -- Wolfgang Viechtbauer http://www.wvbauer.com/ Department of Methodology and Statistics Tel: +31 (0)43 388-2277 School for Public Health and Primary Care Office Location: Maastricht University, P.O. Box 616 Room B2.01 (second floor) 6200 MD Maastricht, The Netherlands Debyeplein 1 (Randwyck) ----Original Message---- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Antonio.Gasparrini at lshtm.ac.uk Sent: Friday, November 13, 2009 19:47 To: r-help at r-project.org Subject: [R] multivariate meta-analysis with the metafor package
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 performing some analyses with R on multiple outcomes, using the Stata command mvmeta to get meta-analytic multivariate estimates, then coming back to R to use these results. Obviously, it's irritating to switch software every time. Briefly: - Are you still planning this extension? And in this case, do you have a planned date? - What are likely to be the advantages and limitations of a potential 'rma.multi' if compared to Stata's 'mvmeta'? Thank you for your time Regards, Antonio Gasparrini Public and Environmental Health Research Unit (PEHRU) London School of Hygiene & Tropical Medicine Keppel Street, London WC1E 7HT, UK Office: 0044 (0)20 79272406 - Mobile: 0044 (0)79 64925523 Skype contact: a.gasparrini http://www.lshtm.ac.uk/people/gasparrini.antonio ( http://www.lshtm.ac.uk/pehru/ )
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