ny comp.risk cause

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/timereg@279 edab9b15-3c32-4f9a-a569-739a535b425d
man

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/timereg@280 edab9b15-3c32-4f9a-a569-739a535b425d
man

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/timereg@281 edab9b15-3c32-4f9a-a569-739a535b425d