Package: natstrat
Type: Package
Title: Obtain Unweighted Natural Strata that Balance Many Covariates
Version: 2.0.1
Authors@R: c(
    person("Katherine", "Brumberg", email = "kbrum@umich.edu", 
        role=c("aut", "cre")))
Description: Natural strata can be used in observational studies to
        balance the distributions of many covariates across any number
        of treatment groups and any number of comparisons. These strata
        have proportional amounts of units within each stratum across
        the treatments, allowing for simple interpretation and
        aggregation across strata. Within each stratum, the units are
        chosen using randomized rounding of a linear program that
        balances many covariates. For more details, see Brumberg et al.
        (2022) <doi:10.1111/rssa.12848> and Brumberg et al.(2023)
        <doi:10.1093/jrsssc/qlad010>. To solve the linear program, the
        'Gurobi' commercial optimization software is recommended, but
        not required. The 'gurobi' R package can be installed by
        following the instructions at
        <https://docs.gurobi.com/projects/optimizer/en/current/reference/r/setup.html>
        after claiming your free academic license at
        <https://www.gurobi.com/academia/academic-program-and-licenses/>.
URL: https://github.com/kkbrum/natstrat,
        https://kkbrum.github.io/natstrat/,
        https://docs.gurobi.com/projects/optimizer/en/current/reference/r/setup.html
BugReports: https://github.com/kkbrum/natstrat/issues
License: GPL-3
Encoding: UTF-8
LazyData: true
RoxygenNote: 7.3.1
Imports: Rglpk, stats, plyr, pps, sampling, ggplot2, rlang, ramify,
        slam
Depends: R (>= 2.10), caret
Suggests: knitr, rmarkdown, markdown, testthat (>= 3.0.0), DT, stringr,
        covr, gurobi
VignetteBuilder: knitr
Config/testthat/edition: 3
Config/pak/sysreqs: libglpk-dev libicu-dev
Repository: https://kkbrum.r-universe.dev
Date/Publication: 2026-02-03 21:51:55 UTC
RemoteUrl: https://github.com/kkbrum/natstrat
RemoteRef: HEAD
RemoteSha: 8abe4aca76dbccb79a2480f07e629f2e499c7169
NeedsCompilation: no
Packaged: 2026-10-10 17:57:15 UTC; root
Author: Katherine Brumberg [aut, cre]
Maintainer: Katherine Brumberg <kbrum@umich.edu>