Davies Tazman, Saxena Akshar, Wu Jason H Y, Marklund Matti
The George Institute for Global Health, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia.
Division of Economics, Nanyang Technological University, Singapore, Singapore.
Nat Food. 2025 Jul 11. doi: 10.1038/s43016-025-01184-1.
Fiscal food policies can be used, among others, to minimize the burden of diet-related diseases. To inform the design of such policies in Australia, we used the large grocery-purchasing dataset NielsenIQ Homescan to estimate own-price elasticities and cross-price elasticities for 18 food categories. We found that households were most responsive to changes in price for non-sugar-sweetened beverages and sugar-sweetened beverages: a 10% increase in price was associated with reductions in demand of 15% and 12%, respectively. Additionally, an increase in the price of one category was associated with relatively small changes in the quantity demanded for other categories (that is, 92% of cross-price elasticities had an absolute value <0.2). There were small differences in own-price and cross-price elasticities across socioeconomic quintiles. These price elasticity estimates can be used to model the health and equity impacts of fiscal food policies in Australia.
财政食品政策可用于（包括但不限于）将与饮食相关疾病的负担降至最低。为了为澳大利亚此类政策的设计提供参考，我们使用了尼尔森IQ家庭扫描这个大型杂货购买数据集，来估计18种食品类别的自价格弹性和交叉价格弹性。我们发现，家庭对非含糖饮料和含糖饮料价格变化的反应最为敏感：价格上涨10%分别与需求下降15%和12%相关联。此外一类商品价格上涨与其他类商品需求量的相对较小变化相关（即92%的交叉价格弹性绝对值<0.2）。社会经济五分位数组之间的自价格弹性和交叉价格弹性存在细微差异。这些价格弹性估计值可用于模拟澳大利亚财政食品政策对健康和公平的影响。
