R Observatory: Metrics for SteppedPower version 0.4.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

SteppedPower

0.4.0Package record

Power Calculation for Stepped Wedge Designs

0packages depend

6.8Kdownloads / year

39.0%test coverage

13/13flavors OK

Overview

About

Maintained by Philipp MildenbergerCRAN page ↗

Tools for power and sample size calculation as well as design diagnostics for longitudinal mixed model settings, with a focus on stepped wedge designs. All calculations are oracle estimates i.e. assume random effect variances to be known (or guessed) in advance. The method is introduced in Hussey and Hughes (2007) doi:10.1016/j.cct.2006.05.007, extensions are discussed in Li et al. (2020) doi:10.1177/0962280220932962.

Changes in 0.4.0

glsPower() now supports count outcomes via family="poisson"
Added ICC (intracluster correlation) transformation functions: icc_to_RandEff(), RandEff_to_icc(), RandEff_to_alpha012(), and alpha012_to_RandEff() for converting between random effects variances and ICC/CAC/IAC parameters
Added vignette on binomial and count outcomes, with pre-calculated contour plots
In glsPower(), the argument N now overrides the N stored in a supplied

DesMat object

glsPower() now fails gracefully (with a warning) if the information content

cannot be calculated

Character input arguments (e.g. dsntype, family) now throw an error if no

known option is sufficiently similar, instead of silently choosing the closest match

Diagnostic output now uses message() instead of print()
Vignette plots now use the plotly partial bundle to reduce package size
Changed covariance matrix construction to use fbdiag (fast block diagonal matrix)

Show all changes in 0.4.0Hide the rest of the changes in 0.4.0

plot_CellWeights() now treats NA entries in incompMat as unobserved

cluster periods

Replaced \() with function() for backward compatibility with older R versions
Fixed typo in RandEff_to_alpha
Added tests for construct_DesMat(), construct_CovMat(), and glsPower()
Updated vignettes and improved documentation with additional links in help files
Roxygen documentation now uses markdown format; re-roxygenised all documentation

From NEWS.md in the release

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("SteppedPower", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-steppedpower

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-SteppedPower

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-SteppedPower

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.6 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.4.0

READMEYes · 163 wordsVignettesYes · 3 · dynamicNEWSYes · 100% structured · mentions 0.4.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 25includes a package overview page
Examples that run: 100%12 run in a plain check
Exported functions with examples: 61%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 16%

Vignettes (3)

How these are measured

Downloads

6.8K

CRAN downloads in the past year

Rank #7,589 · ~19/day · ~571/mo

Releases R versions

Daily download trend is not available in this view yet.

43430 days

1.2K90 days

6.8K1 year

Compare downloads with other packages →

Also on82 r2u5 autocran

How downloads are counted

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing SteppedPower adds 68 packages (39 with compiled code, 65 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 3.5.0

Imports (6)

Matrixplotly RfastgrDevicesstatsutils

LinkingTo (0)

none

Suggests (4)

knitr rmarkdown pwr testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (2)

Philipp Mildenberger

Author, Maintainer since 0.1.0 (2021)

Federico Marini

Contributor

Releases (7)

Pick two releases to compare their code metrics.

0.4.0Latest
record
2026-09-21 · current release · diff ↗ ·
added 2 exports
RandEff_to_icc, icc_to_RandEff
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.3.5
record
2024-04-29 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.3.4
record
2023-09-13 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.3.2
record
2022-07-05 · diff ↗ ·
removed 2 exports
compute_wlsPower, wlsPower

added 3 exports
compute_InfoContent, compute_glsPower, glsPower
R
R 4.2.0 released · 2022-04-22
0.3.1
record
2021-12-16 · diff ↗ ·
added 3 exports
construct_incompMat, plot_CellWeights, plot_InfoContent
0.2.0
record
2021-07-07 · diff ↗ ·
removed 1 export
construct_timeadjust

added 5 exports
RandEff_to_alpha012, VarClosed_Kasza, VarClosed_Li, alpha012_to_RandEff, construct_timeAdjust
R
R 4.1.0 released · 2021-05-18
0.1.0
record
2021-02-04
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-02-04
Total releases: 7 / 5 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Download size: 2.1 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("SteppedPower")

Format

Mildenberger, P., & Marini, F. (2026). SteppedPower: Power Calculation for Stepped Wedge Designs (Version 0.4.0) [Computer software]. https://doi.org/10.32614/CRAN.package.SteppedPower

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for SteppedPower version 0.4.0 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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