[R] Trend test for survival data

[Markus Kreuz]

Hello,
is there a R package that provides a log rank trend test
for survival data in >=3 treatment groups?
Or are there any comparable trend tests for survival data in R?

Thanks a lot
Markus

-- 
Dipl. Inf. Markus Kreuz
Universitaet Leipzig
Institut fuer medizinische Informatik, Statistik und Epidemiologie (IMISE)
Haertelstr. 16-18 
D-04107 Leipzig

Tel. +49 341 97 16 276
Fax. +49 341 97 16 109
email: markus.kreuz at imise.uni-leipzig.de