colcancer {dirttee} R Documentation

## Colon Cancer Dataset

### Description

A dataset describing colon cancer patients. The data is based on real data from a hospital-based cancer registry but many values are changed to ensure anonymity. Each row is a single case, while the columns represent patients' health conditions and physical parameters.

### Usage

data("colcancer")


### Format

A data.frame with 546 observations with colon cancer cases. The 12 columns describe different parameters of patients' conditions.

### Details

The columns of the data set are:

• followup. numeric. Follow-up time since surgery in days. The time the patient was observed.

• logfollowup. numeric. The follow-up time, but logarithmic.

• death. integer. Indicates whether the patient died. If death occured it is set to 1, otherwise 0.

• sex. factor. Level: "f", "m". The sex of the patient. In this case "f" stands for female, and "m" represents male patients.

• LNE. numeric. The number of examined lymph nodes.

• LNR. numeric, ranges from 0 to 1. The number of cancerous lymph nodes divided by the total number (LNE).

• pUICC. factor. Levels: "I", "II", "III", "IV". Pathological cancer stage. The UICC staging system was used.

• CTX. factor. Levels: "0", "1". Chemotherapy (no / yes)

• ASA.score. factor. Levels: "mild", "severe". An ASA score smaller than 3 is considered a mild general illness, 3 or greater is considered a severe general illness. The ASA scoring system of patients was originally proposed by the American Society of Anesthesiologists.

• R.status factor. Level: "0", "12". Residual tumor after surgery. 0 stands for no residual tumor. 12 stands either for microscopic (R1) or macroscopic residues (R2).

• preexisting.cancer. integer. If there was a history of cancer before the colon cancer. Set to 1 if there has been a cancer in the past and to 0 if not.

• age. numeric. The age of the patient in years.

[Package dirttee version 1.0.1 Index]