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, Jorgensen-Seshadri-Whitmore, weighted Akash, weighted Shanker and
weighted Sujatha 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>,
Gallardo et al. (2025) <doi:10.1038/s41598-025-15903-y>, Kiprotich et al. (2026) <doi:10.1080/00949655.2025.2584734
and Mohammadi et al. (2026).
| Version: |
1.15 |
| Depends: |
R (≥ 4.0.0), stats |
| Imports: |
survival, pracma, expint, msm |
| Suggests: |
frailtyHL |
| Published: |
2026-08-28 |
| DOI: |
10.32614/CRAN.package.extrafrail |
| Author: |
Diego Gallardo [aut, cre],
Marcelo Bourguignon [aut],
John Santibanez [ctb],
Gilbert Kiprotich [ctb],
Pedro Ramos [ctb],
Thomas Augustin [ctb],
Zohreh Mohammadi [ctb],
Paulo Ferreira [ctb],
Gerson Primo [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:
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