I believe there is a typo in the documentation to base::xtfrm, in the file xtfrm.Rd: Under Details, it says: "... The \code{\link[survival]{Surv}} method sorts first on times and then on status code(s), finally on \code{timme2} if present. ...". I believe timme2 should be replaced by time2, since time2 is an argument to Surve. Then it becomes: "... The \code{\link[survival]{Surv}} method sorts first on times and then on status code(s), finally on \code{time2} if present. ..." Best, ?ystein S?rensen [[alternative HTML version deleted]]