Comparison of Fruit and Vegetable Intake among Urban Low-Income US Adults Receiving a Produce Voucher in 2 Cities

Abstract

Importance: Fruit and vegetable vouchers have been implemented by cities and counties across the US to increase fruit and vegetable intake and thereby improve overall nutritional quality. Objective: To determine whether and why use of fruit and vegetable vouchers are associated with varied nutritional intake across different populations and environments. Design, Setting, and Participants: In a population-based pre-post cohort study of 671 adult participants with low income before and during (6 months after initiation) participation in a 6-month program, fruit and vegetable vouchers were distributed for redemption at local San Francisco and Los Angeles neighborhood grocery and corner stores between 2017 and 2019. A transportability analysis was performed to identify factors that may explain variation in voucher use between cities. Exposure: Receipt of $20 per month in produce vouchers for 6 months from 2017 to 2019. Main Outcomes and Measures: Change in total fruits and vegetables (as defined by the US Department of Agriculture) consumed per person per day (change in cup-equivalents between month 6 and month 0). Results: A total of 671 adults (median age, 54.9 years [interquartile range, 45.0-65.0 years]; 61.7% female; 30.9% Black; 19.7% Hispanic) were enrolled. An increase in fruit and vegetable intake of 0.22 cup-equivalents per day overall (95% CI, 0.14-0.31 cup-equivalents; P