Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospital, Nordre Fasanvej 57, 2000, Frederiksberg, Denmark.
Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1014, Copenhagen K, Denmark.
Eur J Clin Nutr. 2020 Apr;74(4):581-587. doi: 10.1038/s41430-019-0470-5. Epub 2019 Jul 17.
The objective of the present study was to investigate the relationship between price and sales volume of non-alcoholic sugar-sweetened beverages (SSBs), diet drinks, sweets and chocolates, including own and cross price elasticity to further quantify the potential impact of price.
The study was based on retail scanner data for grocery sales from retail outlet chains in Denmark during the year 2008-2015. A fixed-effects model was used to estimate the association between price and sales volume, using own price and cross price elasticity.
Sales volume of all sugary products except for chocolates were significantly negatively associated with price. Own price elasticity varied from -0.3 to -0.4 for drinks and sweets indicating that a 10% increase in price would cause a reduction in sales by 3 or 4%. A 10% increase in price of carbonated SSBs would increase sales of diet drinks by 7%. Cross price elasticities for other products were not significant.
The results of the present study demonstrated significant negative associations between changes in price and changes in the sale of SSBs, diet drinks and sweets.
本研究旨在探讨非酒精含糖饮料（SSB）、无糖饮料、糖果和巧克力的价格与销售量之间的关系，包括自身价格弹性和交叉价格弹性，以进一步量化价格的潜在影响。
本研究基于丹麦连锁零售门店 2008 年至 2015 年杂货销售的零售扫描器数据。使用固定效应模型来估计价格和销售量之间的关系，使用自身价格弹性和交叉价格弹性。
除巧克力外，所有含糖产品的销售量均与价格呈显著负相关。饮料和糖果的自身价格弹性在-0.3 到-0.4 之间，表明价格上涨 10%将导致销售额减少 3%或 4%。碳酸 SSB 价格上涨 10%将使无糖饮料的销售额增加 7%。其他产品的交叉价格弹性不显著。
本研究结果表明，SSB、无糖饮料和糖果的价格变化与销售量变化之间存在显著负相关关系。
