In alcohol-intoxicated adolescents with reduced consciousness, gender, age, and also educational level correlate with BAC at admittance. Explanatory factors could be found in sensitivity to alcohol, but also in socioeconomic factors, which influence availability. Intervention strategies could be targeted more specific now for the subgroups found in this study to decrease the growing burden of adolescent alcohol intoxication, both on the societal level and on the clinical level.

Over the four years of the study, the number of adolescents treated with alcoholrelated harm increased significantly (from 297 in 2007 to 684 in 2010), up to a total of 1,616. The dominant reason for hospitalization was ''alcohol intoxication'' (in total 1,350; 88% of all cases). The gender ratio did not change over time (54% boys), but the average age increased over the years (14.9 years to 15.4 years). With respect to the 1,350 adolescents with an alcohol intoxication, the mean blood-alcohol concentration (BAC) in the population was 1.84 gram per liter (range 1.83 to 1.86), with a 1.76 average for girls and a 1.93 for boys, and this did not change over the four-year period. We did observe an increase in the average number of hours of reduced consciousness (2.2 hours to 3.2 hours), but the in-hospital stay of the adolescents decreased (1.07 days to 0.96 days).

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