The melanoma data frame has 205 rows and 7 columns.
It contains data relating to survival of patients after
operation for malignant melanoma collected at
Odense University Hospital by K.T. Drzewiecki.
Format
This data frame contains the following columns:
no
a numeric vector. Patient code.
status
a numeric vector code. Survival status. 1: dead from melanoma, 2: alive,
3: dead from other cause.
days
a numeric vector. Survival time.
ulc
a numeric vector code. Ulceration, 1: present, 0: absent.
thick
a numeric vector. Tumour thickness (1/100 mm).
sex
a numeric vector code. 0: female, 1: male.
Source
Andersen, P.K., Borgan O, Gill R.D., Keiding N. (1993),
Statistical Models Based on
Counting Processes, Springer-Verlag.
Drzewiecki, K.T., Ladefoged, C., and Christensen, H.E. (1980),
Biopsy and prognosis for cutaneous malignant melanoma in clinical
stage I. Scand. J. Plast. Reconstru. Surg. 14, 141-144.