A Point-of-Purchase Intervention Featuring In-Person Supermarket Education Affects Healthful Food Purchases
2012
Milliron, Brandy-Joe | Woolf, Kathleen | Appelhans, Bradley M.
OBJECTIVE: This study tested the efficacy of a multicomponent supermarket point-of-purchase intervention featuring in-person nutrition education on the nutrient composition of food purchases. DESIGN: The design was a randomized trial comparing the intervention with usual care (no treatment). SETTING AND PARTICIPANTS: A supermarket in a socioeconomically diverse region of Phoenix, AZ. One hundred fifty-three adult shoppers were recruited onsite. INTERVENTION: The intervention consisted of brief shopping education by a nutrition educator and an explanation and promotion of a supermarket point-of-purchase healthful shopping program that included posted shelf signs identifying healthful foods, sample shopping lists, tips, and signage. MAIN OUTCOME MEASURES: Outcomes included purchases of total, saturated, and trans fat (grams/1,000 kcal), and fruits, vegetables, and dark-green/yellow vegetables (servings/1,000 kcal) derived through nutritional analysis of participant shopping baskets. ANALYSIS: Analysis of covariance compared the intervention and control groups on food purchasing patterns while adjusting for household income. RESULTS: The intervention resulted in greater purchasing of fruit and dark-green/yellow vegetables. No other group differences were observed. CONCLUSIONS AND IMPLICATIONS: Long-term evaluations of supermarket interventions should be conducted to improve the evidence base and to determine the potential for influence on food choices associated with decreased chronic disease incidence.
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