The effect of alcohol packaging size and strength on U.K. alcohol consumers’ classification of alcohol products as containing a single or multiple drinks

Kersbergen, I., Opazo Breton, M., Field, M. and Meier, P. (2022) The effect of alcohol packaging size and strength on U.K. alcohol consumers’ classification of alcohol products as containing a single or multiple drinks. Psychology of Addictive Behaviors, (doi: 10.1037/adb0000860) (PMID:35758980) (Early Online Publication)

Abstract

Objective: 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. Methods: Ninety-four UK 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. Results: Larger products, bottled drinks, products with higher 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. Conclusion: 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.

• Item Type: Articles
• Status: Early Online Publication
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Meier, Professor Petra
• Authors: Kersbergen, I., Opazo Breton, M., Field, M., and Meier, P.
• College/School: College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > MRC/CSO SPHSU
• Journal Name: Psychology of Addictive Behaviors
• Publisher: American Psychological Association
• ISSN: 0893-164X
• ISSN (Online): 1939-1501
• Published Online: 01 June 2022
• Copyright Holders: Copyright © 2022 American Psychological Association
• First Published: First published in Psychology of Addictive Behaviors 2022
• Publisher Policy: Reproduced in accordance with the publisher copyright policy
• Data DOI: 10.15131/shef.data.17263604