Do Australian adolescents with permission to drink at home engage in different alcohol use behaviours and experience more harms than those without such permission?

Introduction: Around half of Australian students aged 16–17 are estimated to have drunk alcohol in the past month, with 11% drinking at ‘risky’ levels. This study investigated: (i) how many Australian adolescents aged 16–17 had parental permission to drink at home in 2016/17 and whether prevalence differed by adolescent sex; (ii) whether adolescents allowed to drink at home had drunk more recently and were drinking greater quantities; (iii) if adolescents allowed to drink at home experienced more alcohol-related harms; and (iv) if parental drinking patterns were associated with permitting adolescents to drink at home. Methods: Data from Wave 7 of the Longitudinal Study of Australian Children were used. Descriptive and bivariate analyses addressed Aims i–iii. Nested multivariable logistic regression models addressed aim iv. Results: In 2016/17, 28% of Australian adolescents aged 16–17 were allowed to drink alcohol at home. More adolescents with permission had drunk alcohol in the past month (77% vs. 63% of those without permission). There was no difference in quantity of alcohol consumed in the past week between groups. More adolescents allowed to drink at home had experienced alcohol-related harm compared to those without permission (23% vs. 17%). In multivariable analyses, alcohol consumption by primary parents was associated with an increased likelihood of allowing adolescents to drink at home. Discussions and Conclusions: In order to reduce adolescent alcohol use and associated harms, parents should avoid permitting alcohol use among adolescents at home. Frequent (twice or more/week) primary parental alcohol consumption was especially associated with greater odds of allowing adolescents to drink at home.