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metafor

Meta-Analysis Package for R

v4.8-0 · Apr 3, 2026 · GPL (>= 2)

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) <doi:10.18637/jss.v036.i03>.

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CRAN Check Status

3 NOTE
11 OK
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r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 NOTE
r-oldrel-macos-x86_64 NOTE
r-oldrel-windows-x86_64 NOTE
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK
Check details (3 non-OK)
NOTE r-oldrel-macos-arm64

installed package size

installed size is  6.2Mb
  sub-directories of 1Mb or more:
    R      3.1Mb
    help   2.3Mb
NOTE r-oldrel-macos-x86_64

installed package size

installed size is  6.2Mb
  sub-directories of 1Mb or more:
    R      3.0Mb
    help   2.3Mb
NOTE r-oldrel-windows-x86_64

installed package size

installed size is  5.4Mb
  sub-directories of 1Mb or more:
    R      2.2Mb
    help   2.3Mb

Check History

NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE r-oldrel-macos-arm64

installed package size

installed size is  6.2Mb
  sub-directories of 1Mb or more:
    R      3.1Mb
    help   2.3Mb
NOTE r-oldrel-macos-x86_64

installed package size

installed size is  6.2Mb
  sub-directories of 1Mb or more:
    R      3.0Mb
    help   2.3Mb
NOTE r-oldrel-windows-x86_64

installed package size

installed size is  5.4Mb
  sub-directories of 1Mb or more:
    R      2.2Mb
    help   2.3Mb

Reverse Dependencies (94)

Dependency Network

Dependencies Reverse dependencies Matrix metadat numDeriv nlme mathjaxr pbapply digest bayesmeta mada metawho BayesCACE CaMeA CalibrationCurves CausalMetaR EValue GSEMA MAGMA.R MVPBT MetaDose MetaHD MetaStan MetaUtility +79 more reverse deps metafor

Version History

new 4.8-0 Mar 10, 2026
updated 4.8-0 ← 4.6-0 diff Jan 27, 2025
updated 4.6-0 ← 4.4-0 diff Mar 27, 2024
updated 4.4-0 ← 4.2-0 diff Sep 26, 2023
updated 4.2-0 ← 4.0-0 diff May 7, 2023
updated 4.0-0 ← 3.8-1 diff Mar 18, 2023
updated 3.8-1 ← 3.4-0 diff Aug 25, 2022
updated 3.4-0 ← 3.0-2 diff Apr 20, 2022
updated 3.0-2 ← 3.0-1 diff Jun 8, 2021
updated 3.0-1 ← 2.4-0 diff Jun 2, 2021
updated 2.4-0 ← 2.1-0 diff Mar 18, 2020
updated 2.1-0 ← 2.0-0 diff May 13, 2019
updated 2.0-0 ← 1.9-9 diff Jun 21, 2017
updated 1.9-9 ← 1.9-8 diff Sep 24, 2016
updated 1.9-8 ← 1.9-7 diff Sep 27, 2015
updated 1.9-7 ← 1.9-6 diff May 21, 2015
updated 1.9-6 ← 1.9-5 diff May 6, 2015
updated 1.9-5 ← 1.9-4 diff Nov 23, 2014
updated 1.9-4 ← 1.9-3 diff Jul 29, 2014
updated 1.9-3 ← 1.9-2 diff May 4, 2014