BACKGROUND AND AIMS Despite legal age limits set for alcohol consumption, parents are one of the main suppliers of alcohol to underage minors. While supply from non-parental sources has been found to be associated with greater risk of harm compared with parental supply, the association between parental supply and supply from other sources is unclear. This study investigated the associations between parental supply of sips and whole serves of alcohol on subsequent other supply, conditional on current supply from non-parental sources. METHODS Data from the Australian Parental Supply of Alcohol Longitudinal Study cohort of adolescents were used. A cohort of 1927 Australian children recruited in Grade 7 (mean age 12.9 years) was surveyed annually from 2010 to 2016 (94%, n=1821 included for analyses). The primary outcome was alcohol exposure from other sources ('other supply'), including alcohol supply from other adults, friends, siblings, or self-supply, compared with adolescents reporting no supply from these sources. Analyses were conducted using random intercept logistic regression (to account for within-respondent correlation). RESULTS Parental supply of alcohol alone was associated with increased odds of receiving alcohol from other non-parental sources in subsequent years (odds ratio (OR): 1.99; 95% confidence interval (CI): 1.65-2.39) after adjusting for confounders. Increased odds of subsequent other supply were associated with current parental supply of sips (OR: 1.92; 95% CI: 1.56-2.36) and whole drinks (OR: 2.76; 95% CI: 1.85-4.11). CONCLUSIONS Parental supply of alcohol appears to increase the risk of subsequent supply of alcohol from other sources in certain contexts.

中文翻译：

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父母的酒精供应与其他来源对年轻人的供应之间的关联：前瞻性队列

背景和目的 尽管对饮酒设定了法定年龄限制，但父母是未成年未成年人饮酒的主要供应商之一。虽然已发现与父母供应相比，来自非父母来源的供应与更大的伤害风险相关，但父母供应与来自其他来源的供应之间的关联尚不清楚。这项研究调查了父母小口供应与随后其他供应的整份酒精之间的关联，条件是来自非父母来源的当前供应。方法 使用来自澳大利亚父母酒精供应纵向研究队列的青少年数据。从 2010 年到 2016 年，每年对 7 年级（平均年龄 12.9 岁）招募的 1927 名澳大利亚儿童进行调查（94%，n=1821 用于分析）。主要结果是来自其他来源（“其他供应”）的酒精暴露，包括来自其他成年人、朋友、兄弟姐妹或自给的酒精供应，与报告没有从这些来源供应的青少年相比。使用随机截距逻辑回归进行分析（以考虑受访者内的相关性）。结果 调整混杂因素后，仅父母提供酒精与随后几年从其他非父母来源获得酒精的几率增加有关（优势比 (OR)：1.99；95% 置信区间 (CI)：1.65-2.39）。随后其他供应的可能性增加与当前父母供应的小口 (OR: 1.92; 95% CI: 1.56-2.36) 和全饮料 (OR: 2.76; 95% CI: 1.85-4.11) 相关。