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metafor  

Meta-Analysis Package for R
View on CRAN: Click here


Download and install metafor package within the R console
Install from CRAN:
install.packages("metafor")

Install from Github:
library("remotes")
install_github("cran/metafor")

Install by package version:
library("remotes")
install_version("metafor", "4.8-0")



Attach the package and use:
library("metafor")
Maintained by
Wolfgang Viechtbauer
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2009-06-05
Latest Update: 2025-01-28
Description:
A comprehensive collection of functions for conducting meta-analyses in R. The package includes functions to calculate various effect sizes or outcome measures, fit equal-, 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, bubble, and 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. An introduction to the package can be found in Viechtbauer (2010) .
How to cite:
Wolfgang Viechtbauer (2009). metafor: Meta-Analysis Package for R. R package version 4.8-0, https://cran.r-project.org/web/packages/metafor. Accessed 09 Mar. 2026.
Previous versions and publish date:
0.5-0 (2009-06-05 09:20), 0.5-3 (2009-07-31 20:14), 0.5-4 (2009-09-18 22:25), 0.5-5 (2009-10-08 14:41), 0.5-7 (2009-12-06 11:08), 1.0-1 (2010-02-02 11:08), 1.1-0 (2010-04-28 11:32), 1.3-0 (2010-06-25 14:03), 1.4-0 (2010-07-31 01:00), 1.5-0 (2010-12-16 10:31), 1.6-0 (2011-04-13 07:25), 1.7-0 (2013-02-06 11:56), 1.8-0 (2013-04-11 17:37), 1.9-0 (2013-06-21 20:56), 1.9-1 (2013-07-20 15:28), 1.9-2 (2013-10-07 15:05), 1.9-3 (2014-05-05 14:44), 1.9-4 (2014-07-30 19:35), 1.9-5 (2014-11-24 16:07), 1.9-6 (2015-05-07 22:01), 1.9-7 (2015-05-22 07:49), 1.9-8 (2015-09-28 17:40), 1.9-9 (2016-09-25 16:37), 2.0-0 (2017-06-22 15:56), 2.1-0 (2019-05-14 12:20), 2.4-0 (2020-03-19 23:30), 3.0-1 (2021-06-03 13:00), 3.0-2 (2021-06-09 16:30), 3.4-0 (2022-04-21 16:40), 3.8-1 (2022-08-26 19:20), 4.0-0 (2023-03-19 22:20), 4.2-0 (2023-05-08 13:30), 4.4-0 (2023-09-27 20:40), 4.6-0 (2024-03-28 17:00)
Other packages that cited metafor R package
View metafor citation profile
Other R packages that metafor depends, imports, suggests or enhances
Complete documentation for metafor
Functions, R codes and Examples using the metafor R package
Some associated functions: addpoly.default . addpoly . addpoly.predict.rma . addpoly.rma . aggregate.escalc . anova.rma . baujat . bldiag . blsplit . blup . coef.permutest.rma.uni . coef.rma . confint.rma . contrmat . conv.2x2 . conv.delta . conv.fivenum . conv.wald . cumul . dfround . emmprep . escalc . fitstats . fitted.rma . forest.cumul.rma . forest.default . forest . forest.rma . formatters . formula.rma . fsn . funnel . gosh . hc . influence.rma.mv . influence.rma.uni . labbe . leave1out . llplot . matreg . metafor-package . metafor.news . methods.anova.rma . methods.confint.rma . methods.escalc . methods.list.rma . methods.matreg . methods.vif.rma . mfopt . misc-models . misc-options . misc-recs . model.matrix.rma . permutest . plot.cumul.rma . plot.gosh.rma . plot.infl.rma.uni . plot.permutest.rma.uni . plot.rma . plot.rma.uni.selmodel . plot.vif.rma . predict.rma . print.anova.rma . print.confint.rma . print.escalc . print.fsn . print.gosh.rma . print.hc.rma.uni . print.list.rma . print.matreg . print.permutest.rma.uni . print.ranktest.rma . print.regtest.rma . print.rma . profile.rma . qqnorm.rma . radial . ranef . ranktest . rcalc . regplot . regtest . replmiss . reporter . residuals.rma . rma.glmm . rma.mh . rma.mv . rma.peto . rma.uni . robust . selmodel . simulate.rma . tes . to.long . to.table . to.wide . transf . trimfill . update.rma . vcalc . vcov.rma . vec2mat . vif . weights.rma . 
Some associated R codes: Full metafor package functions and examples
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