Average, binge and maximum alcohol intake in healthy young men: discriminant function analysis

Blood samples and data on alcohol consumption, diet, exercise, smoking and drug use were collected from 89 undergraduate men affiliated with Greek houses. This population has previously been identified as one that consumed large amounts of alcohol among university undergraduates. Energy and nutrient intake from foods, exercise and drug use (except caffeine) were not different between those reporting consuming more than or less than 1 oz of alcohol per day. Multiple discriminant analysis using a panel of 35 blood tests correctly classified all subjects according to their self-reported intake of more than or less than 2 oz of alcohol per day; 96% were classified correctly at a cut point of 1.5 oz per day. Correct classification was 96-99% using a measure of binge consumption (quantity-frequency of heavy drinking). When maximum number of drinks per occasion was used in the discriminant function, 90-92% were correctly placed. Discriminant analysis based on a panel of common blood tests appears to be a promising technique to identify young drinkers who consume high amounts of alcohol.