id : |
Person identification |
set : |
Matched set indicator |
case : |
Case-control status (1:case, 0:control |
age : |
Age of individual |
sex : |
Sex of individual (1:male, 2:female) |
abroad : |
Within the last two weeks visited abroad (1:yes, 0:no) |
beef : |
Within the last two weeks eaten beef |
pork : |
Within the last two weeks eaten pork |
veal : |
Within the last two weeks eaten veal |
poultry : |
Within the last two weeks eaten poultry |
liverp : |
Within the last two weeks eaten liverpaste |
veg : |
Within the last two weeks eaten vegetables |
fruit : |
Within the last two weeks eaten fruit |
egg : |
Within the last two weeks eaten eggs |
plant7 : |
Within the last two weeks eaten meat from plant no. 7 |
The participants were asked at which retailer(s) they had purchased meat. Retailers were independently of this linked to meat processing plants, and thus participants were linked to meat processing plants. This way persons could be linked to (amongst other) plant no 7.