R Observatory: Metrics for ParCC version 1.4.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

ParCC

1.4.1Package record

Parameter Converter and Calculator for Health Technology Assessment

0packages depend

2.5Kdownloads / year

1.7%test coverage

13/13flavors OK

Overview

About

Maintained by Abhijit PakhareCRAN page ↗GitHub ↗Website ↗Issues ↗

An interactive 'shiny' application for Health Technology Assessment (HTA) parameter estimation. Converts between rates, probabilities, odds, and hazard ratios (HR); extrapolates survival curves (Exponential, Weibull, Log-Logistic); fits probabilistic sensitivity analysis (PSA) distributions (Beta, Gamma, LogNormal, Dirichlet) via the method of moments; calculates incremental cost-effectiveness ratios (ICERs), net monetary benefit (NMB), value-based pricing, and budget impact; adjusts costs for inflation, discounting, and purchasing power parity (PPP) across 30 countries; and adjusts background mortality using life-table methods. Designed for researchers building cost-effectiveness and budget-impact models who need auditable, formula-documented parameter transformations. Methods include Zhang and Yu (1998) doi:10.1001/jama.280.19.1690 for odds ratio (OR) to relative risk (RR) conversion and Chinn (2000, Statistics in Medicine, 19, 3127-3131) for effect-size transformations.

Changes in 1.4.1

Bug Fixes

**NNT/NNH display** -- Now reports both the exact decimal value (1/ARR) and the ceiling-rounded integer, resolving discrepancies between ParCC output and independent Excel verification. Applies to HR Converter, standalone NNT/NNH calculator, and batch mode.
**Reactive UI update** -- Fixed an issue where the "How This Was Calculated" explanation text could update prematurely when input values changed, before the Calculate button was clicked. All converter modules now snapshot input values at button-click time.
**PSA random seed** -- Changed the PSA simulation seed from a commonly used default to an investigator-selected value (8361) to ensure reproducibility without implying AI-generated code.

Show all changes in 1.4.1Hide the rest of the changes in 1.4.1

**Session timeout warning** -- Added a visible warning banner on the Home page advising users to download their Lab Notebook report before leaving the tool idle, as session data is stored in server memory and lost on timeout.

From NEWS.md in the release

Install

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

install.packages("ParCC", 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("drpakhare/ParCC")

Development version from drpakhare/ParCC. 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-parcc

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-ParCC

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-ParCC

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: 4.2 min · r-release-macos-x86_64

Status changes

OK13 OK2026-09-08
ERROR12 OK, 1 ERROR2026-09-07
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09

Show 2 earlier changesHide 2 earlier changes

ERROR12 OK, 1 ERROR2026-06-08
OK7 OK2026-03-31

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.4.1

READMEYes · 359 wordsVignettesYes · 14 · dynamicNEWSYes · 100% structured · mentions 1.4.1Citation fileNoWebsiteYes · pkgdown

Help pages: 2 (1 internal)includes a package overview page
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 (14)

Show 4 moreHide 4 vignettes

How these are measured

Downloads

2.5K

CRAN downloads in the past year

Rank #11,406 · ~7/day · ~208/mo

Releases R versions

Daily download trend is not available in this view yet.

35930 days

94190 days

2.5K1 year

Compare downloads with other packages →

Also on40 r2u2 autocran

How downloads are counted

Repository

drpakhare/parcc ↗Account: drpakhare

0Stars

1Forks

0Open issues

1Open PRs

0Releases

30Commits

1Commit identities

30 commits · Last activity 2026-10-08

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: 0

Forks over time

2026-07-07 · 02026-10-19 · 1

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/drpakhare/parcc on 2026-10-18.

Continuous integration (1)

GitHub Actions

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-10-08 · The repository has a site deploy workflow

pkgdown site last built 2026-10-08

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-03-21
Commits: at least 6 crediting it in the message

Models named in its commits

Claude Opus 4.66 commits · Mar to Jun 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

9 external dependencies (excludes base and recommended)

Installing ParCC adds 71 packages (38 with compiled code, 71 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (0)

none

Imports (7)

shiny shinythemes ggplot2 plotly DT rmarkdown magrittr

LinkingTo (0)

none

Suggests (2)

knitr 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 (8)

Abhijit Pakhare

Author, Maintainer since 1.4.0 (2026)

Soumya Jain

Author · added in 1.4.1

Ankur Joshi

Author · added in 1.4.1

Beena Joshi

Author · added in 1.4.1

Anvita Malhotra

Author · added in 1.4.1

Oshima Sachin

Author · added in 1.4.1

Biju Somen

Author · added in 1.4.1

Shivansh Verma

Author · added in 1.4.1

Listed in earlier versions (1)

RRC-HTA Team, AIIMS Bhopal

no longer listed · 1.4.0

Releases (2)

Pick two releases to compare their code metrics.

1.4.1Latest
record
2026-10-08 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.4.0
record
2026-03-30
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-03-30
Total releases: 2 / 1 yrs
License: MIT + file LICENSE OSI
Download size: 215 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("ParCC")

Format

Pakhare, A., Jain, S., Joshi, A., Joshi, B., Malhotra, A., Sachin, O., Somen, B., & Verma, S. (2026). ParCC: Parameter Converter and Calculator for Health Technology Assessment (Version 1.4.1) [Computer software]. https://doi.org/10.32614/CRAN.package.ParCC

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 ParCC version 1.4.1 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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