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metafor specifications


Unique identifier OMICS_13221
Name metafor
Alternative name Meta-Analysis Package for R
Software type Package/Module
Interface Command line interface
Restrictions to use None
Operating system Mac OS, Windows
Programming languages R
License GNU General Public License version 3.0
Computer skills Advanced
Version 2.0-0
Stability Stable
methods, stats, graphics, Matrix, utils, testthat, grDevices, MASS, Formula, survival, mvtnorm, BiasedUrn, nlme, R(≥3.2.0), R.rsp, lme4, boot, nloptr, numDeriv, multcomp, CompQuadForm, minqa, dfoptim, ucminf, Epi, gsl
Source code URL
Maintained Yes




No version available



  • person_outline Wolfgang Viechtbauer

Publication for Meta-Analysis Package for R

metafor citations


Family Based Genome Wide Association Study of South Indian Pedigrees Supports WNT7B as a Central Corneal Thickness Locus

PMCID: 5961220
DOI: 10.1167/iovs.17-23536

[…] fferences in ethnicity (Indians, Latinos, or Europeans), study design (family-based design or population design), imputation quality score, age, and sex in meta-regression models using the R package “metafor.” Forest plots were generated using the R package “metafor.” […]


Placebo response in neuropathic pain after spinal cord injury: a meta analysis of individual participant data

PMCID: 5933365
PMID: 29750052
DOI: 10.2147/JPR.S155979

[…] o response were independently examined.–Step 2 of our analysis examined the overall effect size of subject, injury, and pain characteristics across studies (i.e., a pooled effect size). The R package metafor was used to perform a meta-analysis on the regression coefficients derived from bivariable and multivariable regression models. Forest plots were produced to visualize the results from the ran […]


Should empiric antibiotic therapy be withheld when aetiology of preterm birth is non infectious? A protocol for a systematic review

BMJ Open
PMCID: 5922463
PMID: 29703848
DOI: 10.1136/bmjopen-2017-018782

[…] be quantitatively combined due to unacceptable heterogeneity of missing data precluding meta-analysis.All statistical analyses will be conducted using dedicated software. R statistical software with ‘metafor’ package will preferentially be used for all calculations and generation of corresponding plots, but the use of other statistical programs cannot be excluded. […]


Estimating the burden of antimicrobial resistance: a systematic literature review

PMCID: 5918775
PMID: 29713465
DOI: 10.1186/s13756-018-0336-y
call_split See protocol

[…] roportions of papers and average quality scores), tables and graphs to collate and present ORs, HRs, LoS and monetary cost were executed in Microsoft Excel and R version 3.3.2 using packages ‘plyr’, ‘metafor’ and ‘ggplot2’ [–]. […]


Prevalence of left ventricular systolic dysfunction and heart failure with reduced ejection fraction in men and women with type 2 diabetes mellitus: a systematic review and meta analysis

PMCID: 5907399
PMID: 29669564
DOI: 10.1186/s12933-018-0690-3

[…] el plot, the Begg’s rank correlation test and Egger’s linear regression were used [, ]. A p < 0.05 was considered statistically significant. All statistical analyses were performed in R by using the ‘metafor’ package []. […]


Effects of mTOR Is on malignancy and survival following renal transplantation: A systematic review and meta analysis of randomized trials with a minimum follow up of 24 months

PLoS One
PMCID: 5901925
PMID: 29659588
DOI: 10.1371/journal.pone.0194975

[…] logarithms of the RR using the restricted maximum-likelihood estimator []. Standard errors were estimated using incidences and number of patients per group. All calculations were performed using the metafor package in the statistical software package R (version 2.14.2). P values below 0.05 were considered significant and all confidence limits were on the 95% level. […]


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metafor institution(s)
Maastricht University, Maastricht, Netherlands

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