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powertools  

Power and Sample Size Tools
View on CRAN: Click here


Download and install powertools package within the R console
Install from CRAN:
install.packages("powertools")

Install from Github:
library("remotes")
install_github("cran/powertools")

Install by package version:
library("remotes")
install_version("powertools", "1.0.0")



Attach the package and use:
library("powertools")
Maintained by
Catherine M. Crespi
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2024-11-28
Latest Update: 2025-06-10
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).
How to cite:
Catherine M. Crespi (2024). powertools: Power and Sample Size Tools. R package version 1.0.0, https://cran.r-project.org/web/packages/powertools. Accessed 09 Aug. 2026.
Previous versions and publish date:
(2026-07-09 06:43), 0.1.0 (2024-11-14 15:00), 0.1.2 (2024-11-21 09:10), 0.1.3 (2025-06-10 15:40)
Other packages that cited powertools R package
View powertools citation profile
Other R packages that powertools depends, imports, suggests or enhances
Complete documentation for powertools
Functions, R codes and Examples using the powertools R package
Full powertools package functions and examples
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