Skip to Content


Meta-Analysis Package for R
Wolfgang Viechtbauer <>
GPL (>= 2)
The metafor package provides 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 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 (conditional) 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.
Package Version Released
metafor 1.9-2 2 years 29 weeks ago
metafor 1.9-1 2 years 40 weeks ago
metafor 1.9-0 2 years 45 weeks ago
metafor 1.8-0 3 years 3 weeks ago
metafor 1.7-0 3 years 12 weeks ago
metafor 1.6-0 5 years 2 weeks ago
metafor 1.5-0 5 years 19 weeks ago
metafor 1.4-0 5 years 39 weeks ago
metafor 1.3-0 5 years 44 weeks ago
metafor 1.0-1 6 years 12 weeks ago
Your rating: None
Your rating: None