Thompson Kara, Stockwell Tim, Leadbeater Bonnie, Homel Jacqueline
Centre for Addiction Research of British Columbia, Department of Psychology, University of Victoria, Victoria, BC, Canada.
Addiction. 2014 Jun;109(6):894-903. doi: 10.1111/add.12499. Epub 2014 Feb 27.
The use of alterative alcohol indices in developmental research may generate conflicting findings in the literature. This study examined the longitudinal associations among four indices of alcohol involvement from ages 15 to 25 years and examined their concurrent associations with alcohol-related problems in emerging adulthood.
Data are from the Victoria Healthy Youth Survey, a five-wave multi-cohort study conducted biennially in Victoria, Canada between 2003 and 2011.
This study included a subsample of 637 randomly recruited Canadian adolescents, aged 15-25 years.
Four indices of alcohol use were compared using multivariate piecewise growth modeling: frequency, usual quantity, heavy episodic drinking and volume.
All indices increased on average from ages 15 to 21, peaked at approximately age 21, and gradually declined from ages 21 to 25. Levels of use at age 21 were highly correlated across indices (r = 0.63-0.94, P < 0.001), but correlations among rates of change varied between pairs of indices. Heavy episodic drinking and volume had the strongest correlations over time (r = 0.64-0.81, P < 0.001) and accounted for the greatest variance in alcohol use disorder symptoms (R(2) = 0.35) and social and health consequences (R(2) = 16) in emerging adulthood. Frequency and quantity had the weakest associations during adolescence (r = 0.49, P = 0.001) and were uncorrelated during emerging adulthood (r = 0.23, P = 0.09).
Among Canadian youth aged 15-25 years, measures of heavy episodic drinking and volume are the most strongly correlated over time and account for greater variance in alcohol-related problems in emerging adulthood than either frequency or quantity alone.
在发育研究中使用替代性酒精指标可能会在文献中产生相互矛盾的结果。本研究考察了15至25岁期间四个酒精摄入指标之间的纵向关联，并考察了它们与成年早期酒精相关问题的同时关联。
数据来自维多利亚健康青年调查，这是一项于2003年至2011年在加拿大维多利亚每两年进行一次的五波多队列研究。
本研究纳入了637名随机招募的15至25岁加拿大青少年的子样本。
使用多变量分段增长模型比较了四个酒精使用指标：频率、通常饮酒量、重度饮酒发作和饮酒量。
所有指标在15至21岁期间平均增加，在约21岁时达到峰值，然后在21至25岁期间逐渐下降。21岁时的使用水平在各指标之间高度相关（r = 0.63 - 0.94，P < 0.001），但各指标对之间变化率的相关性有所不同。重度饮酒发作和饮酒量随时间的相关性最强（r = 0.64 - 0.81，P < 0.001），并在成年早期酒精使用障碍症状（R² = 0.35）以及社会和健康后果（R² = 0.16）中占最大方差。频率和饮酒量在青春期的关联最弱（r = 0.49，P = 0.001），在成年早期不相关（r = 0.23，P = 0.09）。
在15至25岁的加拿大青年中，重度饮酒发作和饮酒量的测量指标随时间的相关性最强，并且在成年早期比单独的频率或饮酒量更能解释酒精相关问题的更大方差。
