Package: drmeta Type: Package Title: Design-Indexed Location-Scale Meta-Analysis Version: 0.2.2 Authors@R: person( given = "Subir", family = "Hait", email = "haitsubi@msu.edu", role = c("aut", "cre", "cph"), comment = c(ORCID = "0009-0004-9871-9677") ) Description: Fits constrained and unrestricted meta-analytic location-scale models in which residual between-study heterogeneity is modeled as an exponential function of a prespecified design-robustness score. The package supports maximum-likelihood (ML) and restricted maximum-likelihood (REML) estimation, location moderators, the conventional random-effects model as a nested special case, exact estimation at the nonnegative scale-gradient boundary, design-indexed heterogeneity summaries, scale-attenuation measures, prediction of fitted heterogeneity, leave-one-out influence diagnostics, and parametric-bootstrap inference for the scale gradient. Because the scale-gradient null lies on the boundary of the constrained parameter space, standard chi-square likelihood-ratio references do not apply (Self and Liang, 1987, ). The general location-scale parent model is described in Viechtbauer and Lopez-Lopez (2022, ). A scale model reweights studies and does not adjust the mean for design-linked bias. License: MIT + file LICENSE URL: https://github.com/causalfragility-lab/drmeta BugReports: https://github.com/causalfragility-lab/drmeta/issues Encoding: UTF-8 Depends: R (>= 4.1.0) Imports: grDevices, graphics, parallel, stats, utils Suggests: testthat (>= 3.0.0) Config/testthat/edition: 3 Config/roxygen2/markdown: TRUE NeedsCompilation: no Config/roxygen2/version: 8.0.0 Repository: https://subirhait.r-universe.dev Date/Publication: 2026-08-28 21:10:34 UTC RemoteUrl: https://github.com/subirhait/drmeta RemoteRef: HEAD RemoteSha: 57d1f3297f9a6e1154bd04525e1a844abd6214ab Packaged: 2026-09-20 09:21:33 UTC; root Author: Subir Hait [aut, cre, cph] (ORCID: ) Maintainer: Subir Hait