Taniguchi Tori E, Salvatore Alicia L, Williams Mary B, Love Charlotte V, Noonan Carolyn J, Cannady Tamela K, Standridge Joy, Fox Jill, Spiegel Jennifer, Owens JoAnna, Grammar Mandy, Wiley AnDina, Jernigan Valarie Blue Bird
Center for Indigenous Health Research and Policy, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA.
Department of Health Promotion Sciences, University of Oklahoma Health Sciences Center College of Public Health, Oklahoma City, OK, USA.
Curr Dev Nutr. 2019 Jun 25;4(Suppl 1):33-41. doi: 10.1093/cdn/nzz073. eCollection 2020 Jan.
The Tribal Health Resilience in Vulnerable Environments (THRIVE) study aimed to increase healthy food access in 2 rural American Indian communities. The intervention sought to increase fruit and vegetable availability, variety, and convenience through placement, promotion, and pricing of healthy foods and beverages in tribal convenience stores.
The aim of this study was to describe the development and implementation of the study process evaluation tool to assess intervention fidelity as part of this cluster-controlled trial.
Eight stores (2 intervention and 2 control stores per Nation) participated in the study, implemented from May 2016 to May 2017. A web-based survey tailored to store layouts and intervention components assessed how often intervention items were available, approximate quantity available, and whether placement of healthier food items and promotional materials were implemented as designed. After pilot testing the survey, tribal staff members implemented it to collect process evaluation data in the 8 stores during a period of 9-12 mo, assessing study implementation and potential changes in control stores.
Promotional materials were available ≥75% of the time for most intervention locations. Fruit availability was similar in Nation A and Nation B intervention stores (79-100% compared with 70-100%), whereas fresh vegetable availability was higher in Nation B compared with Nation A (95-96% compared with 55-75%). Both control stores in Nation A and 1 control store in Nation B had moderate fruit and vegetable availability, ranging from 45% to 52%. No control stores in either Nation used intervention promotional materials.
Process evaluation data indicate that the study was implemented with moderate to high fidelity. The development and implementation of the tool can inform future healthy retail interventions that aim to improve rural and tribal food environments.
“脆弱环境下部落健康恢复力”（THRIVE）研究旨在增加美国两个印第安农村社区获取健康食品的机会。该干预措施试图通过在部落便利店中对健康食品和饮料进行摆放、促销及定价，来提高水果和蔬菜的可获得性、种类及便利性。
本研究的目的是描述作为该整群对照试验一部分的研究过程评估工具的开发与实施，以评估干预的保真度。
八家商店（每个部落有两家干预商店和两家对照商店）参与了该研究，研究于2016年5月至2017年5月实施。一项根据商店布局和干预组成部分量身定制的网络调查，评估了干预商品的可得频率、可得大致数量，以及更健康食品和促销材料的摆放是否按设计实施。在对该调查进行预测试后，部落工作人员在9至12个月的时间内对这八家商店实施该调查以收集过程评估数据，评估研究实施情况及对照商店的潜在变化。
对于大多数干预地点，促销材料的可得时间≥75%。A部落和B部落干预商店的水果可获得性相似（分别为79 - 100%和70 - 100%），而B部落的新鲜蔬菜可获得性高于A部落（分别为95 - 96%和55 - 75%）。A部落的两家对照商店和B部落的一家对照商店的水果和蔬菜可获得性中等，在45%至52%之间。两个部落的对照商店均未使用干预促销材料。
过程评估数据表明该研究以中等至高保真度实施。该工具的开发与实施可为未来旨在改善农村和部落食品环境的健康零售干预提供参考。
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