wynder {gmvalid}R Documentation

Alcohol, Smoking and Oral Cancer

Description

Alcohol drinking and smoking among cases of oral cancer and controls.

Usage

data(wynder)

Format

A data frame with 443 observations on the following 3 variables.

Alc
a numeric vector indicating the units of alcohol.
Smoking
a numeric vector indicating the units of smoked cigarettes.
Group
a numeric vector indicating whether the subject is "control" (1) or "case" (2).

Details

One unit of alcohol equals 1 oz (30 cc) of whiskey or 8 oz (237 cc) of beer.

Source

Wynder EE, Bross IJ, Feldman R (1957) A study of etiological factors in cancer of the mouth. Cancer, 10:1300-1323.

References

Rothman K (1974) The estimation of synergy or antagonism. American Journal of Epidemiology, 103(5):506-511

Examples

  data(wynder)
  tab <- table(wynder)
  dimnames(tab) <- list(c("<1","1-6",">6"), c("<15","16-34",">34"), c("controls","cases"))  
  names(dimnames(tab)) <- c("Alcohol (unit/day)","Smoking (cigarettes/day)","Group")  
  tab

[Package gmvalid version 1.0 Index]