Glossary

Abstract

Case–control study: An epidemiologic approach in which previously existing cases of a condition (e.g., a type of cancer) are compared with a control group of people who have similar characteristics (e.g., gender, age, and alcohol use history) but have not developed the condition under investigation; the two groups are compared to determine which factor (e.g., ALD allele) may account for the increased disease incidence in the case group.