Binge drinking among adolescents is common in Belgium, posing a risk of serious health consequences. Until today, only estimations of the prevalence of acute alcohol intoxication (AAI) in adolescents have been made. Research into potential risk factors has not yet been conducted in Belgium. Therefore, this study aims to gain more insight into the prevalence, medical characteristics and potential risk factors of AAI among adolescents. A retrospective multicentre chart study was performed on adolescents aged 10–17 years with AAI in Antwerp, Belgium (2015–2021). Patient’s demographics, medical characteristics and information regarding the context of the AAI were collected from medical charts. Over the study period, a total of 1016 patients were admitted with AAI in Antwerp, having a median age of 16.6 years old, a median blood alcohol concentration of 1.95 g/L and combined drug use in 10% of cases. These findings did not significantly change over the study period. Multiple linear regression analysis indicated that after correcting for covariates, higher age, no combined drug use and decreased consciousness at admission were associated with more severe AAI cases (higher blood alcohol concentration). This study shows that AAI is prevalent among Belgian adolescents, and better targeted preventive measures and policies are needed. Our findings could be taken into account when developing preventive measures. However, data addressing the demographics and context of AAI were mostly missing. Therefore, prospective research is required to further investigate potential risk factors associated with AAI.

Background: Alcohol consumption is prevalent among students, with a common tendency to overestimate peers' alcohol use, contributing to increased consumption. This misperception is evident among Flemish students. This study aimed to develop and assess a Social Norms Approach (SNA) intervention targeting Flemish students to correct misperceptions and subsequently reduce alcohol use. Methods: The 'Alcoholfacts' social media campaign was implemented using a quasi-experimental design from November 2022 to March 2023. A process evaluation followed Medical Research Council guidance, and intervention effects were evaluated using baseline and post-intervention surveys. Multiple linear regression with a Difference-in-Difference approach was performed for outcome assessment, using an intention-to-treat approach. Results: The process evaluation showed that 36.3% of the intervention group had seen the campaign and that most of the exposed students found the campaign credible (73.3%). However, 54.8% of the exposed students did not find the campaign appealing. Results of the outcome assessment indicated that students of the intervention group at endline estimated students’ alcohol consumption significantly lower (bootstrapped p = 0.013; B = -1.93, bootstrapped CI = -3.620 to -0.565) compared to students of the control group. However, no significant intervention effect on student’s alcohol consumption was found (bootstrapped p = 0.741; B = -0.32, bootstrapped CI = -2.101 to 1.534). Conclusions: The study supports the efficacy of an SNA campaign in correcting misperceptions but did not yield an immediate reduction in alcohol consumption. Future research should involve the target group in campaign material development to enhance attractiveness and impact.

Background/Objectives: This study investigates the incidence of acute alcohol intoxication (AAI) in adolescents in Belgium, by comparing nationwide estimations based on health insurance data with a recently published hospital chart study in Antwerp. In this way, the scope of AAI among adolescents in Belgium can be estimated more precisely. Methods: Health insurance data collected by the Intermutualistic Agency (IMA) regarding 12- to 17-year-olds admitted at emergency departments in Antwerp in 2019–2021 and receiving a blood test to screen for blood alcohol concentration were validated by data derived from a recently conducted retrospective hospital chart study regarding AAI among adolescents in Antwerp. To compare the incidence of adolescents with AAI between these two datasets, a Poisson regression analysis was performed. Results: The findings reveal that the approximations based on administrative health insurance data present a significant underestimation of the incidence of AAI (p < 0.001): the number of admissions in Antwerp determined by the hospital chart study was 21% higher over 2019–2021. Correcting for this underestimation reveals an estimation for the nationwide average yearly incidence of AAI admissions among adolescents of 33.5 per 10,000 instead of 27.7 per 10,000 in Belgium over 2019–2021. Conclusions: These results imply that the occurrence of AAI among Belgian youth is larger than previously estimated. Therefore, a higher fraction of Belgian adolescents are at risk of serious health consequences due to AAI. This underlines the importance of the development of effective intervention strategies regarding indicated prevention and follow-up.

Background: Excessive drinking among adolescents in Western Europe is prevalent, posing significant health risks and societal costs. Comprehensive data on adolescent drinking patterns is crucial for developing effective prevention strategies. Data on alcohol intoxication among adolescents provide valuable insights in this context. Methods: To gain insight into the demographic and clinical characteristics of acute alcohol intoxication (AAI) across European countries, we analysed emergency department data on AAI among adolescents (aged 14–17) from 2015 to 2023 in three urban regions: Genoa (Italy), Delft (the Netherlands) and Antwerp (Belgium). Results: Out of 1826 admissions, Belgium had the highest median annual admission rate (51 per 10 000 adolescents), followed by the Netherlands (49 per 10 000) and Italy (37 per 10 000). The median age of patients was 16 years across all countries. Sex was equally distributed among Dutch patients; however, in Italy (not statistically significant, 55.6%) and Belgium (statistically significant, 56.8%), more males were admitted. The median blood alcohol concentration (BAC) was higher in the Netherlands (2.00 g/L) compared with Italy and Belgium (1.84 g/L and 1.97 g/L, respectively). This difference remained statistically significant after adjusting for confounders in a multiple linear regression model on BAC. Finally, the proportion of patients with combined drug use (10.4% of the total population) was similar across the three countries. Conclusions: This is the first international study to consolidate data on AAI in minors from multiple countries, emphasising the need for a unified European database on AAI in adolescents to enhance prevention efforts.

Background: Binge drinking by adolescents in Belgium is an increasing problem, according to emergency physicians who have recently alerted society about the increasing numbers of adolescents admitted to hospital due to acute alcohol intoxication (AAI). Until now, only estimations of the prevalence of AAI in adolescents are known and research about potential risk factors has not yet been conducted in Belgium. Methods: To gain more insight into the prevalence, medical characteristics, and context of AAI, a retrospective study in hospitals in the city of Antwerp was conducted. Medical charts of 10 to 18-year-old patients admitted with AAI between 2015 and 2021 were investigated and analysed. Results: Between 2016 and 2021, 547 adolescents with AAI were admitted to 5 of the 8 hospitals in Antwerp. In the University Hospital of Antwerp (n = 177) mean age at admittance was 15.9 years. Older patients had a significantly higher BAC than younger patients (U:2357, 1, p-value: <0.001). In 10% of the patients combined drug use was proven and in this group, BAC was significantly lower (U:209, 1, p-value: <0.001). 60% of the patients were transmitted to the hospital by ambulance and in 31% the ambulance was assisted by specialised medical care. In 18% of the cases, the police were involved. The results of the other hospitals are not yet known at the time of submission but will be presented at the EPH conference. Conclusions: According to the data so far, younger patients and patients with comorbid drug use are admitted with a lower BAC, which could be seen as a potential risk factor. This should be considered in developing preventive measures like sensitization. Moreover, in a noteworthy percentage, ambulances, specialized care, and police are involved, which contributes to high medical and social costs. However, data addressing demographics and the context of AAI were mostly missing. Therefore, prospective research is required to further investigate potential risk factors for AAI. Key messages: • A significant amount of adolescents with AAI are admitted in the city of Antwerp every year, with a mean age of 15.9 years old, which is below the legal alcohol age. • Considering the high prevalence of AAI and the major impact it has on adolescents health and medical and social costs, it is necessary to decrease the prevalence of binge drinking in adolescents.