melanom {ISwR}

Survival after malignant melanoma

Description

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.

Usage

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, Ø. 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))