melanom function

Survival after malignant melanoma

The melanom data frame has 205 rows and 7 columns. It contains data relating to the survival of patients after an operation for malignant melanoma, collected at Odense University Hospital by K.T. Drzewiecki. UTF-8

melanom

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, observation time.
• ulc: a numeric vector code, ulceration; 1: present, 2: absent.
• thick: a numeric vector, tumor thickness (1/100 mm).
• sex: a numeric vector code; 1: female, 2: male.

Source

P.K. Andersen, . Borgan, R.D. Gill, and N. Keiding (1991), Statistical Models Based on Counting Processes, Appendix 1, Springer-Verlag.

Examples

require(survival)
plot(survfit(Surv(days,status==1)~1,data=melanom))