Influence of price discounts and skill-building strategies on purchase and consumption of healthy food and beverages: outcomes of the Supermarket Healthy Eating for Life randomized controlled trial
Data(s) |
01/05/2015
|
---|---|
Resumo |
BACKGROUND: Fiscal strategies are increasingly considered upstream nutrition promotion measures. However, few trials have investigated the effectiveness or cost effectiveness of pricing manipulations on diet in real-world settings. OBJECTIVE: We assessed the effects on fruit, vegetable, and beverage purchasing and consumption of a 20% price-reduction intervention, a tailored skills-based behavior-change intervention, and a combined intervention compared with a control condition. DESIGN: The Supermarket Healthy Eating for Life trial was a randomized controlled trial conducted over 3 mo [baseline (time 1) to postintervention (time 2) with a 6-mo follow-up (time 3)]. Female primary household shoppers in Melbourne, Australia, were randomly assigned to a 1) skill-building (n = 160), 2) price-reduction (n = 161), 3) combined skill-building and price-reduction (n = 160), or 4) control (n = 161) group. Supermarket transaction data and surveys were used to measure the following study outcomes: fruit, vegetable, and beverage purchases and self-reported fruit and vegetable consumption at each time point. RESULTS: At 3 mo (time 2), price reduction-alone participants purchased more total vegetables and frozen vegetables than did controls. Price reduction-alone and price reduction-plus-skill-building participants purchased more fruit than did controls. Relative to controls, in the price-reduction group, total vegetable consumption increased by 233 g/wk (3.1 servings or 15% more than at baseline), and fruit purchases increased by 364 g/wk (2.4 servings; 35% more than at baseline). Increases were not maintained 6 mo postintervention (time 3). Price reduction-alone participants showed a tendency for a slight increase in fruit consumption at time 2 (P = 0.09) that was maintained at time 3 (P = 0.014). No intervention improved purchases of bottled water or low-calorie beverages. CONCLUSIONS: A 20% price reduction in fruit and vegetables resulted in increased purchasing per household of 35% for fruit and 15% for vegetables over the price-reduction period. These findings show that price modifications can directly increase produce purchases. The Supermarket Healthy Eating for Life trial was registered at Current Controlled Trials Registration as ISRCTN39432901. |
Identificador | |
Idioma(s) |
eng |
Publicador |
American Society for Nutrition |
Relação |
http://dro.deakin.edu.au/eserv/DU:30072654/ball-influenceof-2015.pdf http://dro.deakin.edu.au/eserv/DU:30072654/ball-influenceof-inpress-2015.pdf http://www.dx.doi.org/10.3945/ajcn.114.096735 http://www.ncbi.nlm.nih.gov/pubmed/25877492 |
Direitos |
2015, American Society for Nutrition |
Palavras-Chave | #behavior change #fruit and vegetables #price discounts #randomized controlled trial #skills #Science & Technology #Life Sciences & Biomedicine #Nutrition & Dietetics #CORONARY-HEART-DISEASE #OF-THE-LITERATURE #VEGETABLE CONSUMPTION #NUTRITION EDUCATION #BODY-WEIGHT #FRUIT #POPULATION #ADULTS #INTERVENTIONS #METAANALYSIS |
Tipo |
Journal Article |