R Observatory: Metrics for GammaFrailty version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

GammaFrailty

0.1.0Package record

Gamma Frailty Regression Models with Multiple Baseline Distributions

0packages depend

1.1Kdownloads / year

46.2%test coverage

13/13flavors OK

Overview

About

Maintained by Shikhar TyagiCRAN page ↗

Implements univariate gamma frailty regression models for survival data with six different baseline distributions: the Arvind distribution (Pandey et al., 2024), the Lindley distribution (Lindley, 1958), the Linear Failure Rate distribution (Bain, 1974), the Power Xgamma distribution (Tyagi et al., 2022), the Modified Topp-Leone distribution (Singh et al., 2025), and the Power Failure Rate distribution (Mugdadi, 2005). The package supports uncensored (complete) and censored data (right, left, interval, and progressive censoring) with and without covariates. It provides maximum likelihood estimation, standard errors, confidence intervals, t-statistics, p-values, Akaike Information Criterion (AIC), Bayesian Information Criterion (BIC), a bootstrap approximation of the Widely Applicable Information Criterion (WAIC), k-fold cross-validation, variance inflation factors, R-squared, adjusted R-squared, Mean Squared Error (MSE), Mean Absolute Error (MAE), Root Mean Squared Error (RMSE), an overall model F-test, frailty variance estimation, survival probabilities at user-specified time points, median survival, expected survival within a fixed window, risk predictions, marginal predictions, martingale and deviance residuals, standardized and studentized residuals, leverage values, Cook's distance, Difference in Fits (DFFITS), Difference in Betas (DFBETAS), and a comprehensive suite of diagnostic and survival plots including Kaplan-Meier overlays and coefficient forest plots. Random number generation is available for each baseline distribution and the full frailty model, and a simulation study function evaluates parameter recovery across sample sizes and censoring scenarios. References are Lindley (1958) doi:10.1111/j.2517-6161.1958.tb00278.x, Mugdadi (2005) doi:10.1016/j.amc.2004.09.064, Bain (1974) doi:10.1080/00401706.1974.10489237, Singh, Tyagi, Singh, and Tyagi (2025) https://ph02.tci-thaijo.org/index.php/thaistat/article/view/257215, Pandey, Singh, Tyagi, and Tyagi (2024) https://ssca.org.in/journal.html, and Tyagi, Kumar, Pandey, Saha, and Bagariya (2022) https://ijsreg.com/.

Install

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

install.packages("GammaFrailty", 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-gammafrailty

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-GammaFrailty

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-GammaFrailty

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: 2.4 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK7 OK2026-06-19

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMENoVignettesYes · 1 · dynamicNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 35 (1 internal)includes a package overview page
Examples that run: 84%21 run in a plain check · 4 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 74%
Documented parameters: 98%
Return-value docs: 100%
Help pages citing references: 20%

Vignettes (1)

GammaFrailty: Gamma Frailty Regression Models

How these are measured

Downloads

1.1K

CRAN downloads in the past year

Rank #16,881 · ~3/day · ~94/mo

Releases R versions

Daily download trend is not available in this view yet.

27230 days

74590 days

1.1K1 year

Compare downloads with other packages →

Also on20 r2u4 autocran

How downloads are counted

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Installing GammaFrailty adds 7 packages (2 with compiled code, 3.2 MB of source tarballs). Heaviest: sandwich 1.4 MB, maxLik 791 KB, zoo 675 KB.

Depends (1)

R >= 4.0.0

Imports (8)

survivalmaxLik numDerivMASSstatsgraphicsgrDevicesutils

LinkingTo (0)

none

Suggests (3)

testthat knitr rmarkdown

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)

Shikhar Tyagi

Author, Maintainer since 0.1.0 (2026)

Releases (1)

0.1.0Latest
record
2026-06-18 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-06-18
Total releases: 1 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.0.0
Download size: 119 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("GammaFrailty")

Format

Tyagi, S. (2026). GammaFrailty: Gamma Frailty Regression Models with Multiple Baseline Distributions (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.GammaFrailty

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 GammaFrailty version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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