2026-09-02 ワシントン大学セントルイス校
Washington University in St. Louis（WashU）の研究者らが、ミズーリ州のWIC（女性・乳幼児・子ども向け栄養支援プログラム）を利用する家庭が、食料品店で直面する食料アクセス上の障壁を調査し研究した。研究では、WIC対象食品の品ぞろえ、価格、店舗環境、商品表示など、制度を利用する家庭が実際の買い物で経験する問題に注目しています。WICは栄養状態の改善を目的としていますが、対象商品が店舗で容易に見つからなかったり、必要な商品を選択する際に分かりにくさがあったりすると、制度本来の効果が十分に発揮されない可能性があります。研究は、こうした制度設計と実際の食品環境とのギャップを明らかにし、WIC利用世帯がより健康的な食品を入手しやすくするための店舗環境や支援策の改善につながる知見を提供しています。
＜関連情報＞
- https://source.washu.edu/2026/09/assistance-needed-in-aisle-1-what-missouri-wic-families-face/
- https://journals.sagepub.com/doi/10.1177/08901171261478745
1番通路での支援が必要：WIC利用率向上に向けた小売業者との連携 Assistance Needed in Aisle 1: Engaging Retailers to Increase WIC Redemption
Todd Combs, PhD , Dan Ferris, PhD , […], and Sarah Moreland-Russell, PhD
American Journal of Health Promotion Published:August 18, 2026
DOI:https://doi.org/10.1177/08901171261478745
Abstract
Purpose
This pilot study investigated how retailer training can enhance retailer confidence and participants’ shopping experiences to increase WIC benefit redemption.
Design
Three groups of retailers were randomized to (1) receive standard training, (2) receive training supplemented with a brief video, and (3) receive no training. Training groups were surveyed before and after training for confidence with WIC-related tasks.
Setting
WIC-authorized retailer locations in Missouri.
Sample
44 retailers participated.
Measures
Retailer confidence and total WIC items redeemed before and after training.
Analysis
Before and after training and within and between groups, Pearson’s Chi-squared tests compared retailer confidence and analysis of variance and Tukey HSD post-hoc tests compared monthly averages of items redeemed overall and by WIC food category.
Results
Confidence improved for both training groups (standard training: 65% vs 94% (P < 0.00), video: 58% vs 92% (P < 0.00), though the increases in confidence were not different between groups (P = 0.59). Monthly average items redeemed were no different within or between stores or study groups before or after the training.
Conclusions
Increased retailer confidence post-training supports the continued implementation of training and technical assistance. Future programming and research could examine the effects of training on WIC participants’ shopping experiences and meeting stocking requirements more specifically.
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