Data from a case-control study of esophageal cancer in Ille-et-Vilaine, France, evaluating the effects of smoking and alcohol on the incidence of esophageal cancer. Smoking and alcohol are associated risk factors for squamous cell cancer of the esophagus, rather than adenocarcinoma of the esophagus, which is associated with obesity and esophageal reflux. An original base R dataset.

esoph

Format

A data frame with 88 rows and 5 variables

agegp

6 levels of age: "25-34", "35-44", "45-54", "55-64", "65-74", "75+"; type: ordinal factor

alcgp

4 levels of alcohol consumption: "0-39g/day", "40-79", "80-119", "120+"; type: ordinal factor

tobgp

4 levels of tobacco consumption: "0-9g/day", "10-19", '20-29", "30+"; type: ordinal factor

ncases

Number of cases; type: integer

ncontrols

Number of controls; type: integer

Source

Breslow, N. E. and Day, N. E. (1980) Statistical Methods in Cancer Research. Volume 1: The Analysis of Case-Control Studies. IARC Lyon / Oxford University Press. Originally in base R datasets.