Supermarket and Web-Based Intervention Targeting Nutrition - SuperWIN

Apr 03, 2022
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Author/Summarized by Author:
Anthony A. Bavry, MD, MPH, FACC
Summary Reviewer:
Kim A. Eagle, MD, MACC
Trial Sponsor:
The Kroger Company
Date Presented:
04/03/2022
Original Posted Date:
04/03/2022
References

Contribution To Literature:

The SuperWIN trial showed that dietary intervention improves healthy food choices (improvement in DASH score).

Description:

The goal of the trial was to evaluate dietary intervention compared with control among primary care patients who shop at Kroger supermarket.

Study Design

  • Randomization
  • Parallel

Primary care patients were randomized to strategy 1 (n = 107) vs. strategy 2 (n = 109) vs. control (n = 51). Strategy 1 consisted of 6 sessions of data-guided purchasing education (‘in the aisles’). Strategy 2 consisted of the same 6 sessions, plus stepwise introduction and training on technologies (example, online shopping).

  • Total number of enrollees: 267
  • Duration of follow-up: 6 months
  • Mean patient age: 56 years
  • Percentage female: 70%

Inclusion criteria:

  • Primary care patients 21-75 years of age
  • At least one cardiovascular risk factor (obesity, hypercholesterolemia, hypertension)
  • Shop regularly in-person at Kroger supermarket
  • Willing to follow the DASH (Dietary Approaches to Stop Hypertension) diet

Principal Findings:

The primary outcome, change in DASH score from baseline to 3 months, was 8.6 in the strategy 1 group, 12.4 in the strategy 2 group, and 5.8 in the control group (strategies 1 and 2 vs. control p = 0.02; strategy 2 vs. control p = 0.01).

Secondary outcomes:

  • Change in DASH score from baseline to 6 months: 8.4 in the strategy 1 group, 6.6 in the strategy 2 group, and 4.4 in the control group (strategies 1 and 2 vs. control, p = 0.14; strategy 2 vs. control, p = 0.34)
  • Change in systolic blood pressure from baseline to 6 months: -6.6 in the strategy 1 group, -5.7 in the strategy 2 group, and -2.8 in the control group (strategies 1 and 2 vs. control, p = 0.18; strategy 2 vs. control, p = 0.66)

Interpretation:

Among primary care patients who shop at Kroger supermarket, a dietary intervention was beneficial. Dietary intervention within the supermarket increased the purchase of healthy foods and improved the DASH score (primary outcome). However, the improvement in DASH score was not sustained to 6 months. Blood pressure was not improved by dietary intervention.

References:

Presented by Dr. Dylan L. Steen at the American College of Cardiology Annual Scientific Session (ACC 2022), Washington, DC, April 3, 2022.

Clinical Topics: Cardiovascular Care Team, Diabetes and Cardiometabolic Disease, Dyslipidemia, Prevention, Homozygous Familial Hypercholesterolemia, Diet, Hypertension

Keywords: ACC22, ACC Annual Scientific Session, Blood Pressure, Cardiovascular Diseases, Diet, Dietary Approaches To Stop Hypertension, Heart Disease Risk Factors, Hypercholesterolemia, Hypertension, Obesity, Primary Prevention, Primary Health Care, Risk Factors, Supermarkets


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