R Observatory: Metrics for CARM version 2.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

CARM

2.0.0Package record

Covariate-Adjusted Adaptive Randomization via Mahalanobis-Distance

0packages depend

3.1Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Fanglu ChenCRAN page ↗

In randomized controlled trial (RCT), balancing covariate is often one of the most important concern. CARM package provides functions to balance the covariates and generate allocation sequence by covariate-adjusted Adaptive Randomization via Mahalanobis-distance (ARM) for RCT. About what ARM is and how it works please see Y. Qin, Y. Li, W. Ma, H. Yang, and F. Hu (2024). "Adaptive randomization via Mahalanobis distance" Statistica Sinica. doi:10.5705/ss.202020.0440. In addition, the package is also suitable for the randomization process of multi-arm trials. For details, please see Yang H, Qin Y, Wang F, et al. (2023). "Balancing covariates in multi-arm trials via adaptive randomization" Computational Statistics & Data Analysis.doi:10.1016/j.csda.2022.107642.

Install

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

install.packages("CARM", 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-carm

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-CARM

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-CARM

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: 1.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.0.0

READMENoVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 5includes a package overview page
Examples that run: 100%3 run in a plain check
Exported functions with examples: 67%
Documented parameters: 95%
Return-value docs: 100%
Help pages citing references: 40%

How these are measured

Downloads

3.1K

CRAN downloads in the past year

Rank #16,585 · ~8/day · ~255/mo

Releases R versions

Daily download trend is not available in this view yet.

28830 days

76390 days

3.1K1 year

Compare downloads with other packages →

Also on130 r2u4 autocran

How downloads are counted

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Installing CARM adds 17 packages (11 with compiled code, 5.4 MB of source tarballs). Heaviest: vctrs 1.0 MB, dplyr 902 KB, rlang 766 KB.

Depends (2)

R >= 3.6.0stats

Imports (3)

arrangements dplyrMASS

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (4)

Fanglu Chen

Author, Maintainer since 1.0.0 (2023)

Yang Li

Author

Yichen Qin

Author

Haoyu Yang

Author

Releases (3)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.0.0Latest
record
2025-10-29 · current release · diff ↗ ·
added 1 export
stratum_ARM
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.1.0
record
2023-06-07 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.0.0
record
2023-02-03
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2023-02-03
Total releases: 3 / 3 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.6.0
Bundled data: 2.2 KB / 1 file
Download size: 10 KB

Appears in task views

Clinical Trial Design, Monitoring, Analysis and Reporting

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("CARM")

Format

Chen, F., Li, Y., Qin, Y., & Yang, H. (2025). CARM: Covariate-Adjusted Adaptive Randomization via Mahalanobis-Distance (Version 2.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.CARM

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 CARM version 2.0.0 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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