R Observatory: Metrics for simtrial version 1.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

simtrial needs lt, which CRAN will archive unless its check problems are fixed by Nov 7.

simtrial

1.1.0Package record

Clinical Trial Simulation

1packages dependsuggested by 2

8.8Kdownloads / year

79.1%test coverage

13/13flavors OK

Overview

About

Maintained by Yujie ZhaoCRAN page ↗GitHub ↗Website ↗Issues ↗

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.

Changes in 1.1.0

Major changes

The heavy **gt** dependency is replaced by the lightweight **lt** package for rendering summary tables. The lt() generic is re-exported so summary() output can be rendered with lt() after only loading simtrial. as_gt() is deprecated but kept for one release; it still returns a gt_tbl object and now requires the suggested **gt** package to be installed. (#371, thanks to @yihui)

Documentation

Expanded the details for sim_fixed_n() and updated vignettes for the current package interface (#358, thanks to @LittleBeannie).

Tests

Hardened sim_gs_n() and summary.simtrial_gs_wlr() tests against upstream **gsDesign2** changes (#368, #369, thanks to @jdblischak).

From NEWS.md in the release

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. 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-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). 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: 12.6 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-10-17
WARNING12 OK, 1 WARNING2026-10-01
OK13 OK2026-08-04
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09

Show 4 earlier changesHide 4 earlier changes

ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-04-22
ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.0

READMEYes · 406 wordsVignettesYes · 11 · dynamicNEWSYes · 100% structured · mentions 1.1.0Citation fileNoWebsiteYes · pkgdown

Help pages: 38 (5 internal)includes a package overview page
Examples that run: 97%35 run in a plain check (7 of them under a condition) · 1 never run
Exported functions with examples: 96%
Documented parameters: 80%
Return-value docs: 96%
Help pages citing references: 26%

Vignettes (11)

Show 1 moreHide 1 vignette

Using the Magirr-Burman weights for testing HTML

How these are measured

Downloads

8.8K

CRAN downloads in the past year

Rank #4,583 · ~24/day · ~731/mo

Releases R versions

Daily download trend is not available in this view yet.

62230 days

1.9K90 days

8.8K1 year

Compare downloads with other packages →

Also on601 r2u1 autocran

How downloads are counted

Repository

merck/simtrial ↗Organization: Merck

41Stars

14Forks

7Open issues

0Open PRs

11Releases

1,159Commits

19Commit identities

License file reads as GPL-3.0 · 1,159 commits · Last activity 2026-10-01 · +5.1% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 97%
Median days to close, 50 most recently updated closed issues: 17
Median days to close, 50 most recently updated closed PRs: 1

Stars over time

2025-10-06 · 262026-10-14 · 41

How these are measured

PracticesBeta

9 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/merck/simtrial on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-10-01 · The repository has a site deploy workflow

pkgdown site last built 2026-10-01

Coverage (1)

Coverage reporting (Codecov)

Reproducibility and dev environment (1)

data-raw/

Show all practicesHide 2 practices

Automation and maintenance (1)

Dependabot

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-05-18
Pull request it wrote: opened by a project member
Commits: at least 2 crediting it in the message

Models named in its commits

Claude Opus 4.61 commit · May 2026
Claude Opus 4.81 commit · Sep 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

20 external dependencies (excludes base and recommended)

Installing simtrial adds 14 packages (6 with compiled code, 11 MB of source tarballs). Heaviest: data.table 5.7 MB, Rcpp 1.8 MB, mvtnorm 1.0 MB.

Depends (1)

R >= 4.1.0

Imports (11)

Rcpp data.table doFuture foreach future ltmethodsmvtnormstatssurvivalutils

LinkingTo (1)

Rcpp

Suggests (13)

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

Enhances (0)

none

Dependencies facing archival

CRAN will archive these unless their check problems are fixed by the date shown. This package needs each one to install.

ltfix by Nov 7

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Suggested by 2

Depends, Imports or LinkingTo, most downloaded first

gsDesignNB

Suggests, most downloaded first

gsDesign2 FastSurvival

How these are counted

Code & Tests

Datasets

People & History

People (17)

Yujie Zhao

Author, Maintainer since 0.3.2 (2023)

Author

Author

Author

Contributor

Contributor · added in 1.0.0

Contributor

Contributor

Contributor

Contributor

Contributor

Contributor

Show 4 more contributorsHide 4 contributors

Contributor

Contributor

Contributor

Contributor

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

Copyright holder

Releases (7)

Pick two releases to compare their code metrics.

1.1.0Latest
record
2026-09-09 · current release · diff ↗ ·
added 1 export
lt
R
R 4.6.0 released · 2026-04-24
1.0.2
record
2025-11-20 · diff ↗
1.0.1
record
2025-09-11 · diff ↗
1.0.0
record
2025-06-11 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.4.2
record
2024-11-18 · diff ↗ ·
added 1 export
as_gt
0.4.1
record
2024-05-03 · diff ↗ ·
removed 4 exports
early_zero_weight, fh_weight, mb_weight, pvalue_maxcombo

added 11 exports
create_cut, create_test, early_zero, fh, maxcombo, mb, milestone, multitest, rmst, sim_gs_n, wlr
R
R 4.4.0 released · 2024-04-24
0.3.2
record
2023-12-11
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-12-11
Total releases: 7 / 3 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Bundled data: 14 KB / 7 files
Download size: 1.1 MB

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. (2026). simtrial: Clinical Trial Simulation (Version 1.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.simtrial

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 simtrial version 1.1.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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