This is a modified version of survival::colon.These
are data from one of the first successful trials of adjuvant chemotherapy for
colon cancer. Levamisole is a low-toxicity compound previously used to treat
worm infestations in animals; 5-FU is a moderately toxic (as these things go)
chemotherapy agent. There are two records per person, one for recurrence and
one for death
data(colon_s)A data frame with 929 rows and 33 variables