[Alcohol consumption among convicted drivers].

150 males imprisoned for drunken driving were assessed by means of a questionnaire and medical examination. The objectives were to study alcohol consumption and frequency of alcohol-related problems. Half of the assessed persons were less than 30 years of age. 62% had a blood alcohol concentration > 1.50%. 36% had previously been convicted for drunken driving. Average alcohol consumption was 58 gram per day. 40% of the convicted persons reported a consumption of more than 40 gram alcohol per day. Corrected for under-reporting the consumption was even higher. The CAGE questionnaire was positive in 54%, indicating an alcohol-related problem. GGT (gamma-glutamyltransferase) was elevated in 23% and CDT (carbohydrate deficient transferrin) in 35%. This study indicates that 50-60% of convicted drunken drivers were excessive drinkers or/and had alcohol-related problems. Imprisonment and fines seem to have a limited impact on occurrence of drunken driving. Other strategies are discussed.