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metaforest  

Exploring Heterogeneity in Meta-Analysis using Random Forests
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("metaforest", "0.1.5")



Attach the package and use:
library("metaforest")
Maintained by
Caspar J. van Lissa
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2017-09-09
Latest Update: 2025-07-30
Description:
Conduct random forests-based meta-analysis, obtain partial dependence plots for metaforest and classic meta-analyses, and cross-validate and tune metaforest- and classic meta-analyses in conjunction with the caret package. A requirement of classic meta-analysis is that the studies being aggregated are conceptually similar, and ideally, close replications. However, in many fields, there is substantial heterogeneity between studies on the same topic. Classic meta-analysis lacks the power to assess more than a handful of univariate moderators. MetaForest, by contrast, has substantial power to explore heterogeneity in meta-analysis. It can identify important moderators from a larger set of potential candidates (Van Lissa, 2020). This is an appealing quality, because many meta-analyses have small sample sizes. Moreover, MetaForest yields a measure of variable importance which can be used to identify important moderators, and offers partial prediction plots to explore the shape of the marginal relationship between moderators and effect size.
How to cite:
Caspar J. van Lissa (2017). metaforest: Exploring Heterogeneity in Meta-Analysis using Random Forests. R package version 0.1.5, https://cran.r-project.org/web/packages/metaforest. Accessed 18 Sep. 2026.
Previous versions and publish date:
(2026-07-09 06:29), 0.1.0 (2017-09-09 18:58), 0.1.2 (2018-05-31 08:38), 0.1.3 (2020-01-08 05:50), 0.1.4 (2024-01-26 10:40)
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Complete documentation for metaforest
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