The package can be downloaded from the CRAN project site.

Contact, e-mail, links

The package maintainer is Maja Pohar Perme (maja.pohar at )

Please send reports on any possible bugs. Also, feel free to comment or ask questions (preferably after you browse through the help given on these pages).

The project is developed at the Institute of Biostatistics and Medical InformaticsInstitute of Biostatistics and Medical Informatics, University of Ljubljana, Slovenia.
Visit the homepage of our Biostatistical centre for more information on our research.

Package changes

Version 1.6.2: the new relative survival estimator is included in the rs.surv function (method="pohar-perme", default), its variance formula has
been corrected, interactions in rsadd should now work.

About IBMI

Institute for Biostatistics and Medical Informatics (IBMI), formerly Institute for BioMedical Informatics (so still IBMI) was founded by the Faculty of Medicine as a result of a need for a unit which would perform, or coordinate, tasks related to data analysis and providing information, relevant for research in medicine. The programme of the institute, and its development, have been adjusting thorugh time to changes in financing and technological progress, but the basic aim remain the same: to support research in medicine. This is achieved through the following tasks:


Institute for Biostatistics and Medical Informatics
University of Ljubljana, Faculty of Medicine
Vrazov trg 2, 1000 Ljubljana

tel: +386 1 543-77-70
fax: +386 1 543-77-71
email: ibmi (at)