School of Health and Related Research, University of Sheffield.
Department of Psychology, University of Sheffield.
Psychol Addict Behav. 2023 Nov;37(7):969-976. doi: 10.1037/adb0000860. Epub 2022 Jun 27.
Reductions to the size and strength of alcohol products prompt reductions in alcohol consumption, although these effects may be limited to single drinks rather than packages that contain multiple drinks. This study investigated what product characteristics predict whether a product is seen as a single drink and seeks to identify the thresholds beyond which products are considered to contain multiple drinks.
Ninety-four U.K. drinkers from the prolific participant panel categorized 250 alcohol products with varying packaging sizes and strengths into single or multiple drinks. We used multilevel logistic regression to investigate whether packaging size, strength, total alcohol content, and container type predicted the likelihood that products were classified as a single drink across five drink types (beer, cider, ready-to-drink, spirits, wine). We used receiver operating characteristics curve analysis to identify the point at which products become too large or too strong to be considered a single drink by most drinkers.
Larger products, bottled drinks, products with higher alcohol by volume (ABV), and higher alcohol content were more likely to be classified as containing multiple drinks. We report thresholds for packaging size, ABV, and total alcohol content where products switch from being seen as a single drink to containing multiple drinks. The thresholds did not significantly differ between low-risk and increased risk drinkers.
The reported thresholds can help researchers and policy makers encourage more accurate self-monitoring of alcohol consumption. Future research should test whether single drink classifications moderate the effect of packaging size and strength reductions on alcohol consumption. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
减少酒精产品的容量和强度会促使饮酒量减少，尽管这些效果可能仅限于单次饮酒，而不是包含多次饮酒的包装。本研究调查了哪些产品特征可以预测产品是否被视为单次饮酒，并试图确定产品被认为包含多次饮酒的阈值。
来自英国 prolific participant panel 的 94 名饮酒者将 250 种不同包装大小和强度的酒精产品分为单次或多次饮用。我们使用多层逻辑回归来研究包装大小、强度、总酒精含量和容器类型是否可以预测五类饮料（啤酒、苹果酒、预调鸡尾酒、烈酒、葡萄酒）中产品被归类为单次饮用的可能性。我们使用接受者操作特征曲线分析来确定产品变得太大或太强而不能被大多数饮酒者视为单次饮用的临界点。
较大的产品、瓶装饮料、酒精度（ABV）较高的产品和酒精含量较高的产品更有可能被归类为含有多次饮酒。我们报告了包装大小、ABV 和总酒精含量的阈值，产品从单次饮用转变为包含多次饮用。这些阈值在低风险和高风险饮酒者之间没有显著差异。
报告的阈值可以帮助研究人员和政策制定者鼓励更准确地自我监测饮酒量。未来的研究应该测试单次饮酒分类是否会调节包装大小和强度减少对饮酒量的影响。（PsycInfo Database Record (c) 2023 APA, all rights reserved)。
