## 10.1 The Question

We will again use the classic “Survival from Malignant Melanoma” dataset included in the boot package which we have used previously. The data consist of measurements made on patients with malignant melanoma. Each patient had their tumour removed by surgery at the Department of Plastic Surgery, University Hospital of Odense, Denmark during the period 1962 to 1977.

We are interested in the association between tumour ulceration and survival after surgery.