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Grocery Store Interventions Addressing Components of Food Literacy to Improve Diet Quality: A Systematic Review of Randomized Controlled Trials

Tieman, Bradley
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583998522281172

Abstract Details

2020, MS, University of Cincinnati, Allied Health Sciences: Nutrition.
Background/aim: Recommendations from the 2015 Dietary Guidelines for Americans for the prevention of chronic diseases include eating a variety of nutrient dense foods such as fruits and vegetables. Fruits and vegetables in particular are beneficial because of their cardio-protective antioxidant contents, satiating high fiber content, and low-fat content. Adequate intake of fruits, vegetables, and other nutrient-dense foods low in fat is a key component of food literacy and can help in the prevention and treatment of chronic diseases such as diabetes, obesity, and heart disease. Food literacy is a new concept with many components aimed at improving one’s lifelong relationship with food. To our knowledge, the effectiveness of grocery store nutrition education interventions using these components has not been qualitatively assessed. Objective: Our goal was to conduct a review of supermarket-based nutrition intervention randomized controlled trials for inclusion of 4 key elements of food literacy education (dietary planning and management, selecting healthy foods, preparing healthy foods, and understanding the connection between healthy foods and health and well-being) and to qualitatively examine study outcomes and findings in relation to the included food literacy elements. Design: Systematic review of randomized controlled trials (RCT’s) (search performed September of 2018, including studies from 2008 to 2018) using EBSCOHost and PubMed databases. Inclusion criteria: randomized controlled study, nutrition education interventions taking place in a grocery store, supermarket, or corner store (real or simulated), a main outcome aimed at improving diet quality (i.e. increasing fruit and vegetable intake or purchasing, overall diet quality) or improving a metabolic parameter (BMI, blood pressure, etc.). Exclusion criteria: Interventions studying the effects of a price discount/price manipulation, or food item availability manipulation alone. For studies that fit these criteria, we thoroughly reviewed the educational components of each intervention to determine how these components aligned with those of Vidgen and Gallagos’ “eleven components of food literacy derived from the Expert and Young People’s Studies”. These eleven components were grouped into four domains identified as “core” or “essential” to food literacy. We qualitatively evaluated the interventions for inclusion of education and skills training across the 4 domains and examined study outcomes in relation to this coverage. Results: Of the 8 retail-based intervention studies that met inclusion criteria, all 8 included nutrition education that contained food literacy content in one or more of the 4 domains of the Vidgen and Gallegos food model: Plan/Manage, Select, Prepare, or Eat. Of the 8 studies, 2 had significant findings in the nutrition education only group without the use of price discounts, as well as face-to-face nutritionist or dietitian nutrition education. Both of these studies had 3 or more food literacy domains covered in the intervention. Conclusion: Grocery store nutrition education interventions addressing several or all domains of food literacy, with in-person dietitian or nutrition educator contact, may be helpful in improving ones purchasing or intake of fruits and vegetables. However, more homogeneous intervention designs, settings, and outcome measures, as well as quantitative analyses, are needed in order to make stronger, more definitive conclusions.
Sarah Couch, Ph.D. (Committee Chair)
Laurie Nommsen-Rivers, Ph.D. (Committee Member)
34 p.
Nutrition
food literacy; diet quality; nutrition education; grocery store

Recommended Citations

Citations

  • Tieman, B. (2020). Grocery Store Interventions Addressing Components of Food Literacy to Improve Diet Quality: A Systematic Review of Randomized Controlled Trials [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583998522281172

    APA Style (7th edition)

  • Tieman, Bradley. Grocery Store Interventions Addressing Components of Food Literacy to Improve Diet Quality: A Systematic Review of Randomized Controlled Trials. 2020. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583998522281172.

    MLA Style (8th edition)

  • Tieman, Bradley. "Grocery Store Interventions Addressing Components of Food Literacy to Improve Diet Quality: A Systematic Review of Randomized Controlled Trials." Master's thesis, University of Cincinnati, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1583998522281172

    Chicago Manual of Style (17th edition)

ucin1583998522281172
239
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This open access ETD is published by University of Cincinnati and OhioLINK.