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extrafrail: Estimation and Additional Tools for Alternative Shared Frailty Models

Provide estimation and data generation tools for new multivariate frailty models. This version includes the gamma, inverse Gaussian, weighted Lindley, Birnbaum-Saunders, truncated normal, mixture of inverse Gaussian, mixture of Birnbaum-Saunders, generalized exponential and Jorgensen-Seshadri-Whitmore as the distribution for frailty terms. For the basal model, it is considered a parametric approach based on the exponential, Weibull and the piecewise exponential distributions as well as a semiparametric approach. For details, see Gallardo et al. (2024) <doi:10.1007/s11222-024-10458-w>, Gallardo et al. (2025) <doi:10.1002/bimj.70044>, Kiprotich et al. (2025) <doi:10.1177/09622802251338984> and Gallardo et al. (2025) <doi:10.1038/s41598-025-15903-y>.

Version: 1.14
Depends: R (≥ 4.0.0), stats
Imports: survival, pracma, expint, msm
Suggests: frailtyHL
Published: 2025-08-24
DOI: 10.32614/CRAN.package.extrafrail
Author: Diego Gallardo [aut, cre], Marcelo Bourguignon [aut], John Santib<c3><a1><c3><b1>ez [ctb], Gilbert Kiprotich [ctb], Pedro Ramos [ctb], Thomas Augustin [ctb], Zohreh Mohammadi [ctb]
Maintainer: Diego Gallardo <dgallardo at ubiobio.cl>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
Materials: NEWS
CRAN checks: extrafrail results

Documentation:

Reference manual: extrafrail.html , extrafrail.pdf

Downloads:

Package source: extrafrail_1.14.tar.gz
Windows binaries: r-devel: extrafrail_1.14.zip, r-release: extrafrail_1.13.zip, r-oldrel: extrafrail_1.14.zip
macOS binaries: r-release (arm64): extrafrail_1.14.tgz, r-oldrel (arm64): extrafrail_1.14.tgz, r-release (x86_64): extrafrail_1.14.tgz, r-oldrel (x86_64): extrafrail_1.14.tgz
Old sources: extrafrail archive

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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