R-Forge Project: Parametric Frailty Models - News

[parfm 2.5.9] Kendall's tau for lognormal frailties

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Wed, 02 Sep 2015 09:26:33 GMT

Computation of the Kendall's tau for the lognormal frailty distribution is now available. The computation is based on the numerical integration of xL(x)L"(x), where L(x) and L"(x) are approximated via the Laplace method.

[parfm 2.5.2] New: lognormal frailty distribution

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Mon, 12 Nov 2012 18:13:39 GMT

We are glad to announce that the lognormal frailty distribution is now available in the new release 2.5.2 of parfm.
Its Laplace transform, not available in an explicit form, is approximated via the saddlepoint method.

New: stratification (parfm 1.01-2)

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Tue, 27 Mar 2012 16:44:27 GMT

We added stratification in parfm package, version 1.01-2,
as demanded by some users.

It is sufficiently stable, but still needs some testing.

parfm 0.71 on CRAN

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Thu, 08 Mar 2012 20:30:15 GMT

with datasets and their examples

parfm 0.66 on CRAN

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Mon, 20 Feb 2012 11:27:39 GMT

The parfm package for Parametric Frailty Models is now publicly available on CRAN, release 0.66.

parfm 0.66-2: Data sets availables

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Fri, 17 Feb 2012 14:53:38 GMT

Datasets
- asthma
- culling
- diagnosis
- ecf
- insem
- insemtvc
- mastitis
- reconstitution
from Duchateau and Janssen (2008) are now available in parfm.

[downloaded from http://www.vetstat.ugent.be/research/frailty/datasets/]

New: confidence intervals, predictions, model selection

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Wed, 08 Feb 2012 16:41:51 GMT

New features availables:
- confidence intervals of hazard ratios: ci.parfm()
- prediction of frailties: predict.parfm()
- model selection via AIC and BIC: select.parfm()

parfm Package available

federicorotolo@users.r-forge.r-project.org (Federico Rotolo) — Tue, 15 Nov 2011 07:48:00 GMT

The present version of the package is available.

It can be installed via the command
install.packages("parfm", repos=c("http://R-forge.R-project.org", "http://www.freestatistics.org/cran/"), dep=TRUE)

Please test it as much as possible!
Thanks,

Federico