extrafrail: Estimation and Additional Tools for Alternative Shared Frailty
Models
Provide estimation and data generation tools for some new multivariate frailty models.
This version includes the gamma, inverse Gaussian, weighted Lindley, Birnbaum-Saunders,
truncated normal, mixture of inverse Gaussian and mixture of Birnbaum-Saunders as the
distribution for the 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 and Bourguignon (2022) <doi:10.48550/arXiv.2206.12973> and
Gallardo et al. (2024) <doi:10.1007/s11222-024-10458-w>.
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