R Observatory: Metrics for survSampleSize version 0.1.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

survSampleSize

0.1.2Package record

Sample Size Calculator for Survival Endpoint Clinical Trials

0packages depend

1.1Kdownloads / year

62.7%test coverage

13/13flavors OK

Overview

About

Maintained by Huai JiangCRAN page ↗

An interactive 'shiny' application for sample size and power calculation under general conditions for clinical trials with survival endpoints. Implements the weighted log-rank method of Lu (2021) doi:10.1002/pst.2069 via the 'lrstat' package, supporting non-proportional hazards, delayed treatment effects, unequal allocation and dropout, as well as the classic method of Freedman (1982) doi:10.1002/sim.4780010204 via the 'powerSurvEpi' package. Results are presented interactively with survival curves and event-prediction timelines.

Changes in 0.1.2

Fixed a platform-specific rounding difference in the 'lrstat' sample size test that caused a failure on macOS (ARM64). The test now accepts the correct result on both Windows and macOS.

From NEWS.md in the release

Install

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

install.packages("survSampleSize", 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-survsamplesize

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-survSampleSize

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-survSampleSize

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: 1.3 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-04
NOTE12 OK, 1 NOTE2026-08-01
OK9 OK2026-06-22
ERROR4 OK, 2 ERROR2026-06-21

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.2

READMEYes · 274 wordsVignettesYes · 1 · staticNEWSYes · 100% structured · mentions 0.1.2Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 1
Examples that run: 100%1 run in a plain check (under a condition)
Exported functions with examples: 100%
Documented parameters: not tracked
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Getting started with survSampleSize HTML

How these are measured

Downloads

1.1K

CRAN downloads in the past year

Rank #15,762 · ~3/day · ~96/mo

Releases R versions

Daily download trend is not available in this view yet.

30230 days

77590 days

1.1K1 year

Compare downloads with other packages →

Also on22 r2u1 autocran

How downloads are counted

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Installing survSampleSize adds 75 packages (41 with compiled code, 85 MB of source tarballs). Heaviest: BH 14 MB, stringi 11 MB, ggplot2 6.0 MB.

Depends (0)

none

Imports (4)

lrstat powerSurvEpi shinystats

LinkingTo (0)

none

Suggests (7)

bslib DT ggplot2 knitr plotly rmarkdown testthat (>= 3.0.0)

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Huai Jiang

Author, Maintainer since 0.1.1 (2026)

Releases (2)

Pick two releases to compare their code metrics.

0.1.2Latest
record
2026-06-21 · current release · diff ↗
0.1.1
record
2026-06-20
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-06-20
Total releases: 2 / 1 yrs
License: MIT + file LICENSE OSI
Download size: 37 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("survSampleSize")

Format

Jiang, H. (2026). survSampleSize: Sample Size Calculator for Survival Endpoint Clinical Trials (Version 0.1.2) [Computer software]. https://doi.org/10.32614/CRAN.package.survSampleSize

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 survSampleSize version 0.1.2 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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