A dynamic panel model of the associations of sweetened beverage purchases with dietary quality and food-purchasing patterns.
A dynamic panel model of the associations of sweetened beverage purchases with dietary quality and food-purchasing patterns.
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甜味饮料购买与饮食质量和食品购买模式之间关联的动态面板模型。
DOI：
10.1093/aje/kwu317
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发表时间：
2015
影响因子：
5
通讯作者：
Popkin,BarryM
中科院分区：
文献类型：
--
作者：
Piernas,Carmen;Ng,ShuWen;Mendez,MichelleA;Gordon-Larsen,Penny;Popkin,BarryM
调查含糖饮料消费量与饮食质量之间的关联具有挑战性，因为反向因果关系和不可测量的混杂因素等问题可能导致有偏见和不一致的估计。使用一个动态面板模型与工具变量来解决这些问题，我们研究了饮料与热量和低热量甜味剂与饮食质量和食品购买模式的独立关联。我们分析了从2000年到2010年（n= 34，294）的Homescan调查的购买数据，这是一项持续的，纵向的，具有全国代表性的美国调查。我们的模型包括饮食质量和饮料购买量（前一年的服务/天）的滞后测量，以预测在调整其他社会人口协变量后的下一年的结果（宏量营养素（每人每天千卡; %），总能量和食品购买量）。尽管从所有来源的购买量（人均每日千卡）长期下降，但任何一种饮料类型的消费量每增加1份/天，都会导致每日总千卡和食物、碳水化合物、总糖和总脂肪的千卡购买量增加。任何一种饮料的消费量每增加1份/天，都与购买更多的含热量的甜味甜点或甜味剂有关，这些甜点或甜味剂占总千卡增加的很大比例。我们的结论是，消费者的饮料加糖与低热量甜味剂和饮料加糖与热量甜味剂有较差的饮食质量，表现出更高的能量从所有购买，糖和脂肪，并购买更多的热量加糖甜点/热量甜味剂相比，非消费者。
Investigating the association between consumption of sweetened beverages and dietary quality is challenging because issues such as reverse causality and unmeasured confounding might result in biased and inconsistent estimates. Using a dynamic panel model with instrumental variables to address those issues, we examined the independent associations of beverages sweetened with caloric and low-calorie sweeteners with dietary quality and food-purchasing patterns. We analyzed purchase data from the Homescan survey, an ongoing, longitudinal, nationally representative US survey, from 2000 to 2010 (n= 34,294). Our model included lagged measures of dietary quality and beverage purchases (servings/day in the previous year) as exposures to predict the outcomes (macronutrient (kilocalories per capita per day; %), total energy, and food purchases) in the next year after adjustment for other sociodemographic covariates. Despite secular declines in purchases (kilocalories per capita per day) from all sources, each 1-serving/day increase in consumption of either beverage type resulted in higher purchases of total daily kilocalories and kilocalories from food, carbohydrates, total sugar, and total fat. Each 1-serving/day increase in consumption of either beverage was associated with more purchases of caloric-sweetened desserts or sweeteners, which accounted for a substantial proportion of the increase in total kilocalories. We concluded that consumers of both beverages sweetened with low-calorie sweeteners and beverages sweetened with caloric sweeteners had poorer dietary quality, exhibited higher energy from all purchases, sugar, and fat, and purchased more caloric-sweetened desserts/caloric sweeteners compared with nonconsumers.
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