The Melanoma data frame has data on 205 patients in Denmark
with malignant melanoma.
MelanomaThis data frame contains the following columns:
timesurvival time in days, possibly censored.
status1 died from melanoma, 2 alive, 3 dead from
other causes.
sex1 = male, 0 = female.
ageage in years.
yearof operation.
thicknesstumour thickness in mm.
ulcer1 = presence, 0 = absence.