metafor: Meta-Analysis Package for R

A comprehensive collection of functions for conducting meta-analyses in R. The package includes functions to calculate various effect sizes or outcome measures, fit fixed-, random-, and mixed-effects models to such data, carry out moderator and meta-regression analyses, and create various types of meta-analytical plots (e.g., forest, funnel, radial, L'Abbe, Baujat, GOSH plots). For meta-analyses of binomial and person-time data, the package also provides functions that implement specialized methods, including the Mantel-Haenszel method, Peto's method, and a variety of suitable generalized linear (mixed-effects) models (i.e., mixed-effects logistic and Poisson regression models). Finally, the package provides functionality for fitting meta-analytic multivariate/multilevel models that account for non-independent sampling errors and/or true effects (e.g., due to the inclusion of multiple treatment studies, multiple endpoints, or other forms of clustering). Network meta-analyses and meta-analyses accounting for known correlation structures (e.g., due to phylogenetic relatedness) can also be conducted.

Version: 2.4-0
Depends: R (≥ 3.5.0), methods, Matrix
Imports: stats, utils, graphics, grDevices, nlme
Suggests: lme4, numDeriv, minqa, nloptr, dfoptim, ucminf, optimParallel, CompQuadForm, mvtnorm, BiasedUrn, Epi, survival, GLMMadaptive, multcomp, gsl, sp, boot, crayon, R.rsp, testthat, rmarkdown
Published: 2020-03-19
Author: Wolfgang Viechtbauer ORCID iD [aut, cre]
Maintainer: Wolfgang Viechtbauer <wvb at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Citation: metafor citation info
Materials: README NEWS
In views: ClinicalTrials, MetaAnalysis, Phylogenetics
CRAN checks: metafor results


Reference manual: metafor.pdf
Vignettes: Diagram of Functions in the metafor Package
Conducting Meta-Analyses in R with the metafor Package
Package source: metafor_2.4-0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release: metafor_2.4-0.tgz, r-oldrel: metafor_2.4-0.tgz
Old sources: metafor archive

Reverse dependencies:

Reverse depends: bayesmeta, metaforest, metawho, SAMURAI
Reverse imports: altmeta, boot.heterogeneity, catmap, concurve, ConfoundedMeta, EValue, fmri, fragility, getmstatistic, getspres, KenSyn, MAVIS, mc.heterogeneity, meta, MetaCyto, metagam, metagear, metagen, metamedian, metamisc, metaplus, MetaUtility, metaviz, MetaVolcanoR, miniMeta, MMUPHin, NSM3, psychmeta, PublicationBias, puniform, RcmdrPlugin.MA, Replicate, reproducer, rma.exact, SimTimeVar, SSDforR, statsExpressions, xmeta
Reverse suggests: agridat, clubSandwich, curatedCRCData, curatedOvarianData, forestmodel, MAc, MAd, metaplotr, metarep, metaSEM, mixmeta, mvmeta, parameters, performance, publipha, see


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