

   BBllaaddddeerr CCaanncceerr RReeccuurrrreenncceess

        data(bladder)

   FFoorrmmaatt::

        bladder

        id:         Patient id
         rx:        Treatment 1=placebo  2=thiotepa
         number:    Initial number of tumours (8=8 or more)
         size:      size (cm) of largest initial tumour
         stop:      recurrence or censoring time
         enum:      which recurrence (up to 4)

        bladder2

        id:         Patient id
         rx:        Treatment 1=placebo  2=thiotepa
         number:    Initial number of tumours (8=8 or more)
         size:      size (cm) of largest initial tumour
         start:     start of interval (0 or previous recurrence time)
         stop:      recurrence or censoring time
         enum:      which recurrence (up to 4)

   SSoouurrccee::

        Wei, Lin, Weisfeld, JASA 1989

