Brief Report: Trends in Social Inequality in Drunkenness Among Danish Adolescents, 1991-2014.

OBJECTIVE: This study examined whether social inequality in frequent drunkenness among Danish adolescents changed from 1991 to 2014. METHOD: We used data from the international Health Behaviour in School-aged Children (HBSC) study, which provided nationally representative samples of 15-year-olds from seven comparable cross-sectional studies in Denmark (N = 8,655). The students provided data about frequency of drunkenness and parents' occupation. RESULTS: In total, 38.6% reported to have been drunk at least four times, decreasing from 44.2% in 1991 to 21.2% in 2014. Most of the decrease took place in the latter part of the period. This decrease was found in all occupational social classes, but there was no change in absolute social inequality in drunkenness four or more times reported from 1991 to 2014. The sex- and yearadjusted odds ratio for frequent drunkenness was 0.80, 95% CI [0.70, 0.93] in low compared with high occupational social class. The statistical interaction between survey year and occupational social class was insignificant (p = .3601); that is, there was no change in relative social inequality in frequent drunkenness over time. CONCLUSIONS: Drunkenness was more prevalent among adolescents from the high occupational social class, and this social inequality did not change from 1991 to 2014.