pnr
a numeric vector patient number.
rcpage
a numeric vector, age of recipient (years).
donage
a numeric vector, age of donor (years).
type
a numeric vector, type of leukaemia coded 1: AML, 2: ALL, 3: CML
for acute myeloid, acute lymphatic, and chronic myeloid leukaemia.
preg
a numeric vector code indicating whether donor has been pregnant. 0: no, 1: yes.
index
a numeric vector giving an index of mixed epidermal cell-lymphocyte
reactions.
gvhd
a numeric vector code, graft-versus-host disease, 0: no, 1: yes.
time
a numeric vector, follow-up time
dead
a numeric vector code, 0: no (censored), 1: yes