e.cancer {asbio}

Esophageal cancer data modified slightly to create a balanced three-way factorial design

Description

Breslow and Day (1980) studied the effect of age, tobacco, and alcohol on esophageal cancer rates at Ile-et-Vilaine, France. Data are altered slightly to make the design balanced, and to allow enough degrees of freedom to perform a fully factorial three way ANOVA.

Usage

data(e.cancer)

Format

The dataset contains four variables:

age grp.

age group, a factor with four levels: "25-34", "35-44", "45-54", "55-64", and "65-74".

alcohol

alcohol consumed (g/day).

tobacco

tobacco consumed (g/day).

cases

number of esophageal cancer cases.

Source

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