Objective: As alcohol is often consumed for social purposes, we aimed to explore how restrictions during the first Danish COVID-19 lockdown affected the alcohol use among adolescents aged 15–20. Method: In May 2020, 11,596 15- to 20-year-olds from two subpopulations answered a survey regarding their alcohol use and social life, as well as changes to these, during the Danish lockdown. Using survey data from all participants, we performed a multinomial logistic regression to assess the association between determinants of alcohol use and perceived change in alcohol use during the Danish lockdown. We used longitudinal data from one subpopulation ( n=1869) to perform negative binomial regressions exploring changes in frequency of alcohol use from 2019 to 2020. Results: Of all participants, 59% drank less, 75% had fewer in-person social interactions and 56% met more frequently online during lockdown. Girls were more likely than boys to have a perceived decrease in alcohol use during lockdown (odds ratio (OR)=1.41; 95% confidence interval (CI) 1.27–1.56). A perceived decrease in in-person social interaction during lockdown was associated with less drinking (OR=2.27; 95% CI 1.98–2.61), while a perceived increase in in-person social interaction during lockdown was associated with more drinking (OR=1.42; 95% CI 1.11–1.82) compared to unchanged drinking behaviour and social interaction. Conclusions: Adolescents in Denmark drank less during the Danish lockdown than before. Findings indicate that there is a close relationship between in-person social interactions and frequency of drinking. Drinking episodes when meeting online were rare and were not unambiguously associated with changes in drinking during lockdown.
Aims: To analyse whether parental alcohol norms were associated with the alcohol intake of high school students and whether this association persisted across different levels of alcohol intake in school and trustful communication with parents. Methods: This was a cross-sectional study among 70,544 high school students (mean age 18 years) participating in the Danish National Youth Study 2014. We examined the associations between parental alcohol norms and individual alcohol intake as the number of drinks at the most recent school party and the frequency of binge drinking in the last 30 days using negative binomial regression. We then performed joint analyses of parental alcohol norms and alcohol intake at school level, and parental alcohol norms and trustful communication with parents. Results: The mean intake of alcohol at the most recent school party was 9.9 units of alcohol for boys and 7.6 units of alcohol for girls. A total of 36.2% of boys and 24.7% of girls were binge drinking frequently (more than four occasions in the last month). Lenient parental alcohol norms and a low level of trustful communication with parents were associated with a higher intake at the most recent school party and with the frequency of binge drinking. Joint analyses showed that these associations persisted across different levels of school level alcohol intake and levels of trustful communication with parents. Conclusions: Among high school students, parental alcohol norms were strongly associated with alcohol intake and consistently so across different levels of school level alcohol intake and level of trustful communication with parents. This indicates that the role of parents in preventing excessive drinking is important, even in older adolescents.
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