| singapore {AF} | R Documentation |
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