Melanoma {MASS} | R Documentation

## Survival from Malignant Melanoma

### Description

The `Melanoma` data frame has data on 205 patients in Denmark with malignant melanoma.

### Usage

    data(Melanoma)

### Format

This data frame contains the following columns:

`time`
  survival time in days, possibly censored
`status`
  `1` died from melanoma, `2` alive, `3` dead from other causes
`sex`
  `1` = male, `2` = female
`age`
  age in years
`year`
  of operation
`thickness`
  tumour thickness in mm
`ulcer`
  `1` = presence, `0` = absence

### Source

P. K. Andersen, O. Borgan, R. D. Gill, and N. Keiding (1993) Statistical Models based on Counting Processes. Springer.