HM Treasury Magenta Book Policy Evaluation Primitives R package magentabook version 0.1.0 Implements policy evaluation primitives from HM Treasury Magenta Book guidance (HM Treasury, 2020): theory of change and log-frame construction, evaluation planning and stakeholder mapping, power and minimum-detectable-effect calculations for randomised designs (including cluster and stepped-wedge designs following 'Hussey' and 'Hughes' (2007) <doi:10.1016/j.cct.2006.05.007> and 'Hemming' et al. (2015) <doi:10.1136/bmj.h391>), Maryland Scientific Methods Scale ratings, structured confidence ratings, light-weight difference-in-differences and interrupted-time-series estimators ('Bernal' et al. (2017) <doi:10.1093/ije/dyw098>) with cluster-robust standard errors ('Cameron' and 'Miller' (2015) <doi:10.3368/jhr.50.2.317>), pre-treatment balance checks ('Stuart' (2010) <doi:10.1214/09-STS313>), and cost-effectiveness analysis (cost per outcome, incremental cost-effectiveness ratio, acceptability curves, incremental net benefit, quality-adjusted and disability-adjusted life years). Designed as the evaluation companion to the appraisal package 'greenbook'. Bundled rubric and reference tables carry vintage metadata for reproducibility. Software Depends: R (>= 4.1.0) Imports: cli (>= 3.6.0), stats, utils Suggests: testthat (>= 3.0.0), knitr, rmarkdown, openxlsx, officer, flextable, pwr, sandwich, swCRTdesign, BCEA, cobalt Charles Coverdale <charlesfcoverdale@gmail.com> Comprehensive R Archive Network (CRAN) Charles Coverdale [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=magentabook/LICENSE) 2026-04-29 application/tgz https://CRAN.R-project.org/package=magentabook doi:10.32614/CRAN.package.magentabook en-US