wynder {gmvalid} | R Documentation |
Alcohol drinking and smoking among cases of oral cancer and controls.
data(wynder)
A data frame with 443 observations on the following 3 variables.
Alc
Smoking
Group
One unit of alcohol equals 1 oz (30 cc) of whiskey or 8 oz (237 cc) of beer.
Wynder EE, Bross IJ, Feldman R (1957) A study of etiological factors in cancer of the mouth. Cancer, 10:1300-1323.
Rothman K (1974) The estimation of synergy or antagonism. American Journal of Epidemiology, 103(5):506-511
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