Cross-Design & Cross-Format Network Meta-Analysis and Regression R package crossnma version 1.3.1 CRAN Task View: MetaAnalysis (https://CRAN.R-project.org/view=MetaAnalysis) Network meta-analysis and meta-regression (allows including up to three covariates) for individual participant data, aggregate data, and mixtures of both formats using the three-level hierarchical model. Each format can come from randomized controlled trials or non-randomized studies or mixtures of both. Estimates are generated in a Bayesian framework using JAGS. The implemented models are described by Hamza et al. 2023 <DOI:10.1002/jrsm.1619>. Software Depends: R (>= 4.0.0), meta (>= 8.5-0), netmeta (>= 3.5-0) Imports: rjags, coda, dplyr, plyr, rlang, magrittr, tidyr, ggplot2 Suggests: rmarkdown, knitr Guido Schwarzer <guido.schwarzer@uniklinik-freiburg.de> Comprehensive R Archive Network (CRAN) Tasnim Hamza [aut] (ORCID: <https://orcid.org/0000-0002-4700-6990>), Guido Schwarzer [aut, cre] (ORCID: <https://orcid.org/0000-0001-6214-9087>), Georgia Salanti [aut] (ORCID: <https://orcid.org/0000-0002-3830-8508>) GPL (>= 2) 2026-06-19 application/tgz https://CRAN.R-project.org/package=crossnma doi:10.32614/CRAN.package.crossnma