R Observatory: Metrics for PICOTsize version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

PICOTsize

0.1.0Package record

Sample Size Calculation for PICOT-Based Study Designs

0packages depend

216downloads / year

27.3%test coverage

13/13flavors OK

Overview

About

Maintained by Atefeh Rashidi PourCRAN page ↗GitHub ↗Issues ↗

Provides sample size calculators for the study designs covered by the PICOT framework, including cross-sectional, case-control, cohort, superiority, non-inferiority, and equivalence clinical trials, and diagnostic test accuracy studies, following Bhardwaj et al. (2024) doi:10.4103/jfmpc.jfmpc_1675_23. Calculations are performed using the 'epiR' package as a validated computational backend. Includes a 'shiny' application with a PICOT-based design wizard, an interactive sensitivity plot, and automatically generated Methods-section text for manuscripts.

Changes in 0.1.0

Initial release.
Sample size calculators for cross-sectional (binary and continuous), case-control, cohort, clinical trial (superiority, non-inferiority, equivalence), and diagnostic accuracy study designs, wrapping epiR as the validated computational backend.
Shiny app with a PICOT-based design wizard, dynamic parameter forms, an interactive sensitivity plot, auto-generated Methods-section report text, and a Validation tab comparing results against Bhardwaj et al. (2024).
Five documented methodological corrections relative to the worked examples in Bhardwaj et al. (2024): dropout formula, rounding convention, trial sidedness, and diagnostic test sample size pooling.

From NEWS.md in the release

Install

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

install.packages("PICOTsize", 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("AtefehRashidi/PICOTsize")

Development version from AtefehRashidi/PICOTsize. Installs pak first if it is not already available.

# 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-PICOTsize

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-PICOTsize

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: 3.2 min · r-release-macos-x86_64

Status changes

OK13 OKNow
OK6 OK2026-10-11

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMEYes · 226 wordsVignettesYes · 1 · staticNEWSYes · 67% structured · mentions 0.1.0Citation fileYes · cites a publicationWebsitenot declared in DESCRIPTION

Help pages: 22 (11 internal)
Examples that run: 100%11 run in a plain check (1 of them under a condition)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Vignettes (1)

Validating PICOTsize against Bhardwaj et al. (2024) HTML

How these are measured

Downloads

216

CRAN downloads in the past year

Rank #25,456 · ~1/day · ~18/mo

PICOTsize Releases R versions

Daily download trend is not available in this view yet.

21630 days

21690 days

2161 year

Compare downloads with other packages →

How downloads are counted

Repository

atefehrashidi/picotsize ↗Account: AtefehRashidi

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-09-19

Responsiveness

not measured

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/atefehrashidi/picotsize on 2026-10-21.

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Installing PICOTsize adds 96 packages (57 with compiled code, 100 MB of source tarballs). Heaviest: stringi 11 MB, sf 9.3 MB, ggplot2 6.0 MB.

Depends (1)

R >= 4.1.0

Imports (6)

bslib epiR ggplot2 plotly rlang shiny

LinkingTo (0)

none

Suggests (3)

knitr rmarkdown testthat

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)

Atefeh Rashidi Pour

Author, Maintainer since 0.1.0 (2026)

Releases (1)

0.1.0Latest
record
2026-10-10 · current release ·
6 days in CRAN's queue
Listed in CRAN's incoming queue from 2026-10-03 21:57 to 2026-10-10 03:36 UTC, in 28 readings.
R
R 4.6.0 released · 2026-04-24

Across CRAN, the median accepted release of the past year spent 23 hours in the queue, 90% under 11 days.How queue time is measured

Package metadata

First published: 2026-10-10
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.1.0
Download size: 1.2 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("PICOTsize")

The package provides a citation file that builds its entry when R runs it. Run citation() to see it.

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 PICOTsize version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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