Cost Effectiveness of Subsidizing Fruit and Vegetable Purchases Through the Supplemental Nutrition Assistance Program

Sung Eun Choi, Hilary Seligman, Sanjay Basu, Sung Eun Choi, Hilary Seligman, Sanjay Basu

Abstract

Introduction: A diet high in fruits and vegetables (FV) is associated with reduced risk of chronic disease. One strategy to incentivize FV consumption among low-income households is to make them more affordable through the Supplemental Nutrition Assistance Program (SNAP). This study aims to identify the cost effectiveness of subsidizing FV purchases among the one in seven Americans who participate in SNAP.

Methods: A cost-effectiveness analysis was conducted from a societal perspective to estimate lifetime costs and health gains associated with subsidizing FV purchases. A stochastic microsimulation model of obesity, type 2 diabetes, myocardial infarction, and stroke in the 2015 U.S. population was used. Model parameters were based on nationally representative SNAP participation and dietary consumption data from the National Health and Nutrition Examination Survey (2003-2012), and data from a randomized trial of FV subsidies among SNAP users.

Results: Despite cycling of participants in and out of SNAP, expanding an FV subsidy nationwide through SNAP would be expected to reduce incidence of type 2 diabetes by 1.7% (95% CI=1.2, 2.2), myocardial infarction by 1.4% (95% CI=0.9, 1.9), stroke by 1.2% (95% CI=0.8, 1.6), and obesity by 0.2% (95% CI=0.1, 0.3), and be cost saving from a societal perspective. The saved costs would be largely attributable to long-term reductions in type 2 diabetes and cardiovascular diseases.

Conclusions: The model suggests nationwide SNAP FV subsidies would reduce chronic disease morbidity, mortality, and costs over long time horizons that are unlikely to be observed in short-term community-based trials.

Copyright © 2017 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

Figures

Figure 1
Figure 1
Model schematic. SBP, systolic blood pressure; TC, total cholesterol; HBP TX, hypertension treatment status; HDL-C, high-density lipoprotein cholesterol; MI, myocardial infarction; CVD, cardiovascular disease; FV, fruit and vegetable
Figure 2
Figure 2
Projected reduction in incidence of diseases by gender and race/ethnicity due to a 30% subsidy on SNAP purchases of fruits and vegetables in the SNAP population. MI, myocardial infarction; SNAP, Supplemental Nutrition Assistance Program

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