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postcard: Estimating Marginal Effects with Prognostic Covariate Adjustment

Conduct power analyses and inference of marginal effects. Uses plug-in estimation and influence functions to perform robust inference, optionally leveraging historical data to increase precision with prognostic covariate adjustment. The methods are described in Højbjerre-Frandsen et al. (2025) <doi:10.48550/arXiv.2503.22284>.

Version: 1.0.0
Imports: cli, Deriv, dplyr, earth, generics, magrittr, options, parsnip, rlang, rsample, stats, stringr, tidyselect, tune, utils, workflowsets, xgboost, yardstick
Suggests: gggrid, ggplot2, knitr, LiblineaR, MASS, ranger, rmarkdown, testthat (≥ 3.0.0), withr
Published: 2025-04-08
DOI: 10.32614/CRAN.package.postcard
Author: Mathias Lerbech Jeppesen [aut, cre], Emilie Hojbjerre-Frandsen [aut], Novo Nordisk A/S [cph]
Maintainer: Mathias Lerbech Jeppesen <mathiasljeppesen at outlook.com>
BugReports: https://github.com/NovoNordisk-OpenSource/postcard/issues
License: MIT + file LICENSE
URL: https://novonordisk-opensource.github.io/postcard/, https://github.com/NovoNordisk-OpenSource/postcard
NeedsCompilation: no
Materials: README NEWS
CRAN checks: postcard results

Documentation:

Reference manual: postcard.pdf
Vignettes: Controlling behavior of model fitting functions (source, R code)
Introduction to postcard (source, R code)
Prospective Power Estimation (source, R code)

Downloads:

Package source: postcard_1.0.0.tar.gz
Windows binaries: r-devel: postcard_1.0.0.zip, r-release: postcard_1.0.0.zip, r-oldrel: not available
macOS binaries: r-devel (arm64): postcard_1.0.0.tgz, r-release (arm64): postcard_1.0.0.tgz, r-oldrel (arm64): postcard_1.0.0.tgz, r-devel (x86_64): postcard_1.0.0.tgz, r-release (x86_64): postcard_1.0.0.tgz, r-oldrel (x86_64): postcard_1.0.0.tgz

Linking:

Please use the canonical form https://CRAN.R-project.org/package=postcard to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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