Pediatric cancer data on 1620 children.
sex: 1 male, 2 female;
race: 1 white, 2 nonwhite;
age: in years;
entry: calendar date of entry in days since July 1,
2001;
far: home distance
from treatment center in miles;
t: survival time in days;
d 1 if death
observed, 0 if not.