AF (version 0.1.2)

singapore: Case-control study on oesophageal cancer in Chinese Singapore men.

Description

This dataset is borrowed from "Aetiological factors in oesophageal cancer in Singapore Chinese" by De Jong UW, Breslow N, Hong JG, Sridharan M, Shanmugaratnam K (1974).

Usage

data(singapore)

Format

The dataset contains the following variables:

Age

age of the patient.

Dial

dialect group where 1 represent "Hokhien/Teochew" and 0 represent "Cantonese/Other".

Samsu

a numeric indicator of whether the patient consumes Samsu wine or not.

Cigs

number of cigarettes smoked per day.

Bev

number of beverage at "burning hot" temperatures ranging between 0 to 3 different drinks per day.

Everhotbev

a numeric indicator of whether the patients ever drinks "burning hot beverage" or not. Recoded from the variable "Bev".

Set

matched set identification number.

CC

a numeric variable where 1 represent if the patient is a case, 2 represent if the patient is a control from the same ward as the case and 3 represent if the patient is control from orthopedic hospital.

Oesophagealcancer

a numeric indicator variable of whether the patient is a case of oesophageal cancer or not.

The following changes have been made to the data from the original data in De Jong UW (1974): - The variable "Bev" is recoded into the numeric indicator variable "Everhotbev": singapore$Everhotbev <- ifelse(singapore$Bev >= 1, 1, 0)

References

De Jong UW, Breslow N, Hong JG, Sridharan M, Shanmugaratnam K. (1974). Aetiological factors in oesophageal cancer in Singapore Chinese. Int J Cancer Mar 15;13(3), 291-303.

http://faculty.washington.edu/heagerty/Courses/b513/WEB2002/datasets.html