crt2power

1.2.2

Designing Cluster-Randomized Trials with Two Continuous Co-Primary Outcomes

0packages depend

3.9Kdownloads / year

60.1%test coverage

13/13checks pass

Overview

About

Maintained by Melody OwenFirst published 2024-06-205 releasesCRAN page ↗GitHub ↗

Provides methods for powering cluster-randomized trials with two continuous co-primary outcomes using five key design techniques. Includes functions for calculating required sample size and statistical power. For more details on methodology, see Owen et al. (2025) doi:10.1002/sim.70015, Yang et al. (2022) doi:10.1111/biom.13692, Pocock et al. (1987) doi:10.2307/2531989, Vickerstaff et al. (2019) doi:10.1186/s12874-019-0754-4, and Li et al. (2020) doi:10.1111/biom.13212.

Install

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

install.packages("crt2power", repos = "https://cloud.r-project.org/")

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

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("melodyaowen/crt2power")

Development version from melodyaowen/crt2power. Installs pak first if it is not already available.

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-crt2power

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-crt2power

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-crt2power

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 15.3 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.86

60.1%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 849 wordsVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

3.9K

CRAN downloads in the past year

Rank #19,579 · ~11/day · ~327/mo

Releases R versions

Daily download trend is not available in this view yet.

19830 days

61490 days

3.9K1 year

Compare downloads with other packages →

Also on129 r2u25 autocran

Repository

GitHub ↗ melodyaowen/crt2power

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2025-12-19

Repository practices

Upstream repositoryBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/melodyaowen/crt2power on 2026-07-19.

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

11 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.3

Imports (11)

devtools knitr rootSolve tidyverse tableone foreach mvtnorm tibble dplyr tidyrstats

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 5,157 (84%)Rd 1,006 (16%)

Code characteristics

Cyclomatic complexity: 12.0 median / 33 max
Test cases: 98 / 0.86 per code line

Test coverage

Line coverage

60%

Expression

69.3%

Tests / Examples

60.1% / 54% ex

Functions

17 17 exported

Complexity

13.8 avg / 33 max

Call network

17 nodes / 30 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

17 functions

Function	Cyclo	Coverage
run_crt2_design exp	33	7%
calc_pwr_conj_test exp	26	65%
calc_m_disj_2dftest exp	10	74%
calc_pwr_single_1dftest exp	10	75%
calc_pwr_comb_outcome exp	10	76%
calc_K_comb_outcome exp	13	77%

People & History

People (1)

Maintainer (1)

Melody Owen

Author, Maintainer

Authors (1)

Melody Owen

Author, Maintainer

Package Timeline

5 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
1.2.2Latest
2025-11-12 · current release · diff ↗
1.2.1
2025-05-07 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.2.0
2025-03-13 · diff ↗
1.1.0
2024-09-23 · diff ↗
1.0.0
2024-06-20
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-06-20
Total releases: 5 / 2 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.3
Download size: 24 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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