The Ille-et-Vilaine study of oesophageal cancer
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Data Items

1 AgeFrom       Lower Limit of Age category

2 AgeTo         Upper Limit of Age category
                (limit for 75+ set arbitrarily to 84) 

3 AlcFrom       Lower Limit of Alcohol category (gm/day)

4 AlcTo         Upper Limit of Alcohol category (gm/day)
                (limit for 120+ set arbitrarily to 199)

5 TabacFr       Lower Limit of Tobacco category (gm/day)

6 TabacTo       Upper Limit of Tobacco category (gm/day)
                (limit for 30+ set arbitrarily to 49)

7 N_Cases       Number of cases

8 N_Ctls        Number of controls

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(Taken from page 122 of Breslow and Day, Volume I)

4.1 The Ille-et-Vilaine study of oesophageal cancer

A set of data collected by Tuyns et al. (Tuyns AJ et al., 
(1977) Le cancer de l'oesophage en Ille-et-Vilaine en 
fonction des niveaux de consommation d'alcool et de tabac. 
Bull. Cancer, 64, 45-60) in the French department of Ill-et-
Vilaine (Brittany). Cases in this study were 200 males 
diagnosed with oesophageal cancer in one of the regional 
hospitals between January 1972 and April 1974. Controls were 
a sample of 778 adult males drawn from electoral lists in 
each commune, of whom 775 provided sufficient data for 
analysis. Both types of subject were administered a detailed 
dietary interview which contained questions about their 
consumption of tobacco and of various alcoholic beverages in 
addition to those about foods. The analyses below refer 
exclusively to the role of the two factors, alcohol and 
tobacco, in defining risk categories for oesophageal cancer.   
Table 4 summarizes the relevant data. Since no attempt had 
been made to stratify the control sample, there is a tendency 
for the controls to be younger than the cases, a feature 
which has to be accounted for in the analysis.