R Observatory: Metrics for simtrial version 1.0.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

simtrial

1.0.2

Clinical Trial Simulation

3packages depend

9.2Kdownloads / year

82.7%test coverage

13/13checks pass

Overview

About

Maintained by Yujie ZhaoFirst published 2023-12-116 releasesCRAN page ↗GitHub ↗

Provides some basic routines for simulating a clinical trial. The primary intent is to provide some tools to generate trial simulations for trials with time to event outcomes. Piecewise exponential failure rates and piecewise constant enrollment rates are the underlying mechanism used to simulate a broad range of scenarios such as those presented in Lin et al. (2020) doi:10.1080/19466315.2019.1697738. However, the basic generation of data is done using pipes to allow maximum flexibility for users to meet different needs.

Install

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

install.packages("simtrial", 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("Merck/simtrial")

Development version from Merck/simtrial. 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-simtrial

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-simtrial

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-simtrial

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

Health

CRAN checks

13OK

Slowest check: 12.9 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.74

82.7%

Coverage · measured lines

100%

Documentation · exports

10

Dependencies · direct

Check history

OK2026-08-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
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
OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 2 earlier snapshots

ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 406 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 97%
Documented parameters: 80%
Return-value docs: 100%
References docs: 28%

Downloads

9.2K

CRAN downloads in the past year

Rank #4,969 · ~25/day · ~763/mo

Releases R versions

Daily download trend is not available in this view yet.

40830 days

1.6K90 days

9.2K1 year

Compare downloads with other packages →

Also on529 r2u14 autocran

Repository

GitHub ↗ merck/simtrial

37Stars

13Forks

3Open issues

0Open PRs

10Releases

1,150Commits

18Contributors

License GPL-3.0 · 1,150 commits · Last activity 2026-07-01 · +2.8% stars, 30d

Stars over time

2025-07-30 · 242026-08-12 · 37

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/merck/simtrial on 2026-08-09.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

Automation and maintenance (1)

Dependabot

Lint, format, editor (1)

RStudio project

Show all practices

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

20 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (10)

Rcpp data.table doFuture foreach futuremethodsmvtnormstatssurvivalutils

LinkingTo (1)

Rcpp

Suggests (14)

Matrixcovr dplyr ggplot2 gsDesign gsDesign2 gt knitr rmarkdown survMisc survRM2 testthat tibble tidyr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

gsDesignNB FastSurvival gsDesign2

Code & Tests

Datasets

People & History

People (17)

Maintainer (1)

Yujie Zhao

Author, Maintainer

Authors (4)

Author, Maintainer

Author

Author

Author

Contributors (12)

Yi Cui

Contributor

Larry Leon

Contributor · added in 1.0.0

Contributor

Contributor

Contributor

Contributor

Contributor

Contributor

Show 4 more contributors

Contributor

Contributor

Contributor

Contributor

Copyright holders (1)

Merck & Co., Inc., Rahway, NJ, USA and its affiliates

Copyright holder

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.0.2Latest
2025-11-20 · current release · diff ↗
1.0.1
2025-09-11 · diff ↗
1.0.0
2025-06-11 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.4.2
2024-11-18 · diff ↗
0.4.1
2024-05-03 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.3.2
2023-12-11
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-12-11
Total releases: 6 / 3 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Bundled data: 14 KB / 7 files
Download size: 1.0 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("simtrial")

Format

Zhao, Y., Merck & Co., Inc., Rahway, NJ, USA and its affiliates, Anderson, K., Blischak, J., Cui, Y., Leon, L., Li, X., Ling, L., Manschot, C., Shirazi, A., Wang, R., Xiao, N., Yang, J., Yang, P., Zhang, Y., Zhou, H., & Zhu, Y. (2025). simtrial: Clinical Trial Simulation (Version 1.0.2) [Computer software]. https://doi.org/10.32614/CRAN.package.simtrial

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 simtrial version 1.0.2 [Data set]. HJJB, LLC. Data release v2026-08-15. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-15, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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