Multi-level supermarket discounts of fruits and vegetables on intake and health

蔬果多级超市折扣摄入健康

基本信息

批准号：
9038006
负责人：
ALLAN GELIEBTER
金额：
$ 71.01万
依托单位：
ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
依托单位国家：
美国
项目类别：
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-01 至 2021-08-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/9038006
关键词：
American Ascorbic Acid Behavior Biological Markers Blood Pressure Body Composition Body Weight Body fat Carotenoids Cholesterol Chronic Disease Communities Consumption Control Groups Coronary heart disease Coupled Data Diet Dietary intake Eating Economics Energy Intake Fatty acid glycerol esters Food Food Processing Future Goals Government Government Subsidy Guidelines Health Health Food Health Policy Household Income Individual Intake Intervention Lead Low income Measures Metabolic Metabolic syndrome Obesity Outcome Outcome Measure Overweight Participant Plasma Policies Price Private Sector Process Public Sector Publishing Randomized Randomized Controlled Trials Recommendation Recruitment Activity Risk Risk Factors Scanning Societies Supermarket Testing Weight behavioral health cardiometabolic risk consumer demand cost discount discounting falls fasting glucose follow-up fruits and vegetables hypertensive heart disease improved primary outcome public health relevance secondary outcome trend waist circumference

项目摘要

DESCRIPTION (provided by applicant): The relative price of fruits and vegetables (F&V) is high, making purchasing of these healthy foods an economic hardship for many shoppers. Government subsidies coupled with public-sector and private-sector initiatives to incentivize the purchasing of F&V have recently been proposed. It would be difficult, however, to determine a reasonable and appropriate pricing of F&V, without first experimentally assessing the impact of price reduction on consumer demand, consumption, and profitability. The proposed study examines the main and sustained effects of 50%, 25%, and 12.5% discounts, versus 0% discount, on purchasing of F&V by overweight and obese (25 < BMI ≤ 40) shoppers in six stores of a Manhattan supermarket chain. Recruitment will be for 400 shoppers from within these stores to obtain an estimated 300 completers. After a 4-week baseline period (no discounts), participants will be randomly assigned to receive a 50%, 25%, 12.5%, or 0% discount during a 32-week intervention period, with a 16-week follow-up period (no discounts). The discounts will be automatically activated after 4 weeks through the participant's loyalty scan card, which will also track all purchases. The primary aims are to measure the effects of the four discount levels on purchasing and consumption of F&V during the intervention period and the health outcomes at the end of the intervention period. Additionally, a primary aim is to measure the sustained effects of the discounts on these outcomes during the follow-up period. It is expected that the larger the discount on F&V, the greater the increase in purchasing and consumption of F&V, especially for those with relatively low incomes. These increases in F&V purchasing and consumption are expected to lead to improved health outcomes, such as weight and fat loss as well as reduced cardio metabolic risk factors. Demand curves for purchasing and consumption of F&V will be drawn for all the discount levels to help select optimal discount levels. The study findings should help to inform government policymakers on the appropriate subsidies to consider for promoting healthy food choices.

描述（由适用提供）：水果和蔬菜的相对价格（F＆V）很高，使购买这些健康食品的购买成为许多购物者的经济困难。政府补贴以及公共部门和私营部门倡议，以激励餐饮的购买。但是，很难确定F＆V的合理且适当的定价，而无需先实验评估价格降低对消费者需求，消费和盈利能力的影响。拟议的研究研究了在曼哈顿超级市场的六家商店中，通过超重和肥胖（25 <bmi≤40）的购物者（25 <bmi≤40）购买了50％，25％和12.5％折扣的主要和持续影响，而折扣为0％。这些商店内的400家购物者将招募，以获得估计的300个完成者。经过4周的基准期（无折扣），将随机分配参与者在32周的干预期内获得50％，25％，12.5％或0％的折扣，并进行16周的随访期（无折扣）。折扣将在4周后通过参与者的忠诚度扫描卡自动激活，这也将跟踪所有购买。主要目的是衡量在干预期间以及干预期结束时的四个折扣水平对F＆V购买和消费的影响。此外，主要目的是衡量折扣在随访期间对这些结果的持续影响。预计F＆V的折扣越大，F＆V的购买和消费的增加越大，尤其是对于那些收入相对较低的人来说。 F＆V采购和消费的这些增长预计将导致改善的健康状况，例如体重和脂肪减轻以及减少心脏代谢危险因素。为了帮助选择最佳折扣水平的所有折扣水平，将绘制购买和消费餐饮的需求曲线。研究结果应有助于告知政府决策者，以考虑促进健康食品选择的适当补贴。