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P3 Midwestern Regional Grocery Store Chain Canned and Frozen Vegetable Sales

      Background

      Canned vegetables contain higher sodium, which is associated with chronic disease, and are less expensive. Understanding purchasing patterns of low-income Oklahomans will provide information to guide future health interventions.

      Objective

      To describe the overall canned and frozen vegetable sales and determine differences in canned and frozen sales by store's shopper income.

      Study Design, Setting, Participants

      This study was a cross-sectional, secondary analysis of canned and frozen vegetable sales from December 2012 through August 2015 of a Midwestern regional grocery chain (n = 64 stores). Weekly units sold of canned and frozen vegetables were pair-matched by preparation type and averaged across 144 weeks. Supplemental Nutrition Assistance Program (SNAP) sales were used as a proxy for the store's shopper socioeconomic status (SES; ie, high SNAP sales = lower shopper SES). High SES stores (n = 16, bottom quartile) had 5.7% SNAP sales and low SES stores (n = 16, top quartile) had 14.7% SNAP sales.

      Measurable Outcome/Analysis

      An independent t test was conducted to compare the percentage of canned to frozen units sold between high and low SES stores. All statistical tests were conducted assuming P ≤ 0.05, using SAS 9.4.

      Results

      Across all stores, 78.7% of canned and frozen vegetable sales were canned and 21.3% were frozen. Green beans were the highest canned sales and mixed vegetables were the highest frozen sales. Canned vegetable sales accounted for significantly more (84%) of total canned and frozen vegetable sales in low SES stores compared to high SES stores (74%) (P < 0.0001, 95% CI: 0.06-0.13).

      Conclusion

      Low SES stores sell more canned vegetables compared to high SES stores in Oklahoma. These data are representative of Oklahoma sales data and are comparable to national trends. Findings demonstrate a need to understand how individuals living in low SES households make purchasing decisions to improve public health intervention strategies attempting to improve diet quality.
      Funding Supplemental Nutrition Assistance Program - Education.

      Appendix. Supplementary data