Frailty Models via H-likelihood CRAN Task View: Survival (http://CRAN.R-project.org/view=Survival) The frailtyHL package implements the h-likelihood estimation procedures for frailty models. The package fits Cox's proportional hazards models with random effects (or frailties). For the frailty distribution lognormal and gamma are allowed. The h-likelihood uses the Laplace approximation when the numerical integration is intractable, giving a statistically efficient estimation in frailty models. Software Depends: R (>= 2.10.0), Matrix,numDeriv,survival Maengseok Noh <msnoh@pknu.ac.kr> Il Do HA, Maengseok Noh, Youngjo Lee Unlimited 2012-05-12 application/tgz http://CRAN.R-project.org/package=frailtyHL