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In line with other countries from wealthier parts of the world, the Netherlands shows clear trends of less alcohol use and less binge drinking by youth since the millennium shift.1 Contrary to these trends, the number of underage patients who are admitted to a hospital with alcohol intoxication characteristics is an ongoing and stable health concern in the country.2
Knowledge about what time of day patients are brought into the hospital is important for the development of efficient prevention policies. The primary aim of this repeated cross-sectional study was to investigate how time of day variation (morning, afternoon, evening and night) was associated with patient and intoxication characteristics in Dutch adolescents admitted for alcohol intoxication. Furthermore, we also examined how alcohol intoxication hospital admission time trends developed between 2007 and 2017.
In this repeated cross-sectional study, the contents of 5511 patient files were analysed. During the data collection period (2007–2017), paediatric doctors reported cases of alcohol intoxication to the Dutch Paediatric Surveillance Unit, a nationwide surveillance system, with around 95% participation grade. Time of day for admittance was one question on the questionnaire with four answering options: morning (06:00–11:59), afternoon (12:00–17:59), evening (18:00–23:59) and night (00:00–05:59).
Our study shows that adolescent hospital admissions for alcohol intoxication are most frequently seen during the night (64.6%), followed by evening (28.0%), afternoon (4.7%) and morning (3.0%). This pattern is rather stable over the months, with a slight increase in the periods of warmer outdoor temperatures (April–August) as well as a peak in February (figure 1).
Over the years (2007–2017), the number of admissions during the morning and afternoon is stable, but there was a strong increase in night-time admissions and a mild increase in evening admissions. The latter two time frames also caused an overall increase in alcohol intoxication treatments in the Netherlands in the decade from our data collection (figure 2).
Our analyses further show that during morning and afternoon admission, the propensity for male patients is higher. Children from parents who disapprove alcohol consumption are most likely to drink at afternoons and evenings, while children who are (partially) allowed to drink have the biggest chance to end up in a hospital during night-time(online supplemental table 1). The group who is admitted during afternoon hours turns out to be the youngest(online supplemental table 2).
Prevention of adolescent alcohol intoxication in the Netherlands should be specifically targeted at adolescents at risk of night-time admissions. Afternoon admissions require special attention as these adolescents were younger and more frequently showed rule-breaking behaviour. Future research will also focus on the possible role of national (holidays, carnival) and local (fairs) events in relationship to alcohol intoxication in minors.
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Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.