按家庭收入和构成划分，英国软饮料行业征税后家庭软饮料购买量的变化：2014年3月至2019年11月的对照中断时间序列分析

Changes in household purchasing of soft drinks following the UK soft drinks industry levy by household income and composition: controlled interrupted time series analysis, March 2014 to November 2019.

作者信息

Rogers Nina Trivedy, Cummins Steven, Pell David, Rutter Harry, Sharp Stephen J, Smith Richard D, White Martin, Adams Jean

机构信息

Department of Public Health, Environments and Society, London School of Hygiene & Tropical Medicine, London, UK.

MRC Epidemiology Unit, Institute of Metabolic Science, University of Cambridge, Cambridge, UK.

出版信息

BMJ Nutr Prev Health. 2025 Jan 16;8(1):e000981. doi: 10.1136/bmjnph-2024-000981. eCollection 2025.

DOI:10.1136/bmjnph-2024-000981

PMID:40771512

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12322548/

Abstract

BACKGROUND

The WHO recommends taxes on sugar sweetened beverages (SSBs) to improve population health. We examined changes in volume of and amount of sugar in purchases of soft drinks according to household income and composition, 19 months following the implementation of the UK soft drinks industry levy.

METHODS

Data were from the Kantar Fast Moving Consumer Goods panel, a market research panel which collects data on weekly household purchases (mean weekly number of households=21 908), March 2014-November 2019. Interrupted time series analysis of volume and sugar purchases was used to estimate absolute and relative differences in the volume and amount of sugar in soft drinks, confectionery and alcohol purchased weekly by household income (<£20 000, £20-50 000 or >£50 000) and composition (presence of children (<16 years) in the household (yes or no)), 19 months after soft drinks industry levy (SDIL) implementation, compared with the counterfactual scenario based on pre-announcement trends and using a control group (toiletries).

RESULTS

By November 2019, purchased weekly sugar in soft drinks fell by 7.46 g (95% CI: 12.05, 2.87) per household but volumes of drinks purchased remained unchanged, compared with the counterfactual. In low-income households, weekly sugar purchased in soft drinks decreased by 14.0% (95% CI: 12.1, 15.9) compared with the counterfactual but in high-income households increased by 3.4% (1.07, 5.75). Among households with children, sugar purchased decreased by 13.7% (12.1, 15.3) but increased in households without children by 5.0% (3.0, 7.0). Low-income households and those with children also reduced their weekly volume of soft drinks purchased by 5.7% (3.7, 7.7) and 8.5% (6.8, 10.2) respectively. There was no evidence of substitution to confectionary or alcohol.

CONCLUSION

In the second year following implementation of the SDIL, effects on sugar purchased were greatest in those with the highest pre-SDIL purchasing levels (low-income households and those with children). The SDIL may contribute to reducing dietary inequalities.

TRIAL REGISTRATION NUMBER

ISRCTN18042742. Registered: August 2017.

摘要

背景

世界卫生组织建议对含糖饮料征税以改善公众健康。我们研究了英国实施软饮料行业征税19个月后，按家庭收入和构成划分的软饮料购买量及含糖量的变化。

方法

数据来自凯度快速消费品面板，这是一个市场研究面板，收集2014年3月至2019年11月期间家庭每周购买数据（平均每周家庭数 = 21908）。采用购买量和含糖量的中断时间序列分析，以估计按家庭收入（<20000英镑、20 - 50000英镑或>50000英镑）和构成（家庭中是否有16岁以下儿童（是或否））划分的每周购买的软饮料、糖果和酒精饮料的购买量及含糖量的绝对和相对差异，与基于预公告趋势的反事实情景相比，并使用对照组（洗漱用品）。

结果

到2019年11月，与反事实情景相比，每户每周购买的软饮料中的含糖量下降了7.46克（95%置信区间：12.05，2.87），但购买的饮料量保持不变。在低收入家庭中，与反事实情景相比，每周购买的软饮料中的含糖量下降了14.0%（95%置信区间：12.1，15.9），但在高收入家庭中增加了3.4%（1.07，5.75）。在有孩子的家庭中，购买的含糖量下降了13.7%（12.1，15.3），但在没有孩子的家庭中增加了5.0%（3.0，7.0）。低收入家庭和有孩子的家庭每周购买的软饮料量也分别减少了5.7%（3.7，7.7）和8.5%（6.8，10.2）。没有证据表明转向购买糖果或酒精饮料。