MAIVE Is Now on CRAN

We are happy to share that MAIVE (Meta-Analysis Instrumental Variable Estimator) is now available on CRAN:

install.packages("MAIVE")

MAIVE is a simple tool that helps detect when study results look too precise because of method choices or selective reporting, and it provides an IV-based correction. The method was published recently in Nature Communications.

MAIVE is also available in the EasyMeta.org web app, where you can run MAIVE, PET-PEESE, and the EK model with one click, no coding needed:

👉 https://www.easymeta.org

👉 CRAN package: https://cran.r-project.org/web/packages/MAIVE/index.html

👉 Nature Communications article: https://www.nature.com/articles/s41467-025-63261-0

Many thanks to Petr Čala for preparing the CRAN release and building the EasyMeta interface.