Package: powertools
Type: Package
Title: Power and Sample Size Tools
Version: 1.0.0
Authors@R: c(
    person(given = "Catherine M.", family = "Crespi", email = "ccrespi@ucla.edu", role = c("aut", "cre")),
    person(given = "Zichen", family = "Liu", email = "zichenliu@ucla.edu", role = "aut"),
    person(given = "Kristen M.", family = "McGreevy", role = "ctb"))
Maintainer: Catherine M. Crespi <ccrespi@ucla.edu>
Description: Power and sample size calculations for a variety of study
        designs and outcomes. Methods include t tests, ANOVA (including
        tests for interactions, simple effects and contrasts),
        proportions, categorical data (chi-square tests and
        proportional odds), linear, logistic and Poisson regression,
        alternative and coprimary endpoints, power for confidence
        intervals, correlation coefficient tests, cluster randomized
        trials, individually randomized group treatment trials,
        multisite trials, treatment-by-covariate interaction effects
        and nonparametric tests of location. Utilities are provided for
        computing various effect sizes. Companion package to the book
        "Power and Sample Size in R", Crespi (2025,
        ISBN:9781138591622). Further resources available at
        <https://powerandsamplesize.org/>.
URL: https://github.com/powerandsamplesize/powertools
BugReports: https://github.com/powerandsamplesize/powertools/issues
License: MIT + file LICENSE
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.2
Suggests: testthat (>= 3.0.0)
Config/testthat/edition: 3
Imports: mvtnorm, PowerTOST, Hmisc, stats, knitr
Depends: R (>= 2.10)
LazyData: true
Config/pak/sysreqs: cmake make libicu-dev libuv1-dev
Repository: https://powerandsamplesize.r-universe.dev
Date/Publication: 2026-03-04 00:59:19 UTC
RemoteUrl: https://github.com/powerandsamplesize/powertools
RemoteRef: HEAD
RemoteSha: 45176ed250e86d4204b5f5214aea50bd20b132e5
NeedsCompilation: no
Packaged: 2026-07-02 09:14:57 UTC; root
Author: Catherine M. Crespi [aut, cre],
  Zichen Liu [aut],
  Kristen M. McGreevy [ctb]