
Dear R-Users,

We would like to announce a new package called "frailtypack". This package fits a shared gamma frailty model and Cox proportional hazards model using a Penalized Likelihood on the hazard function. Left truncated, censored data and strata (max=2) are also allowed. 

Future versions will include functions for estimating nested frailty models using Penalized approach. 

Regards,

Juan R Gonzalez
Cancer Prevention and Control Unit
Catalan Institute of Oncology, Barcelona (Spain)

and 

Virginie RONDEAU, Ph.D. - CR2 INSERM
Equipe Mixte INSERM E03 38 (Biostatistique), Université Victor Segalen Bordeaux2,
146 rue Léo Saignat,
33076 Bordeaux Cedex, France.
email   : Virginie.Rondeau@isped.u-bordeaux2.fr
web site : http://www.isped.u-bordeaux2.fr/RECHERCHE/BIOSTATS/FR-BIOSTATS-Accueil.htm



	[[alternative HTML version deleted]]


