Comparison of Produce Prescription Benefit Dosage

January 28, 2026 updated by: University of California, San Francisco

Comparison of Produce Prescription Benefit Dosage on Redemption

The goal of this study is to determine the relationship between produce prescription program 'dose' on benefit redemption, food insecurity, and fruit and vegetable consumption. Participants will be randomized to receive one of three fruit and vegetable benefit dose amounts for 6 months ($40, $80, or $110/month).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Emerging evidence from the growing body of research around 'Food is Medicine' interventions shows promise that produce prescriptions (PPR) improve health by enabling purchases of healthy foods, reducing food insecurity, and improving diet quality. However, PPR amounts are often set seemingly arbitrarily, without clear connection to their intended purpose. In this study, investigators will conduct a three-armed randomized trial of 240 participants in Stockton, CA to test the impact of three 'doses' of a fruit and vegetable benefit on benefit redemption, food security, and fruit and vegetable intake. The goal of this study is to determine the relationship between PPR program 'dose' and the key intermediate outcomes of benefit redemption (primary outcome), food insecurity, and consumption of incentivized foods (secondary outcomes). Investigators will also seek to identify any 'ceiling effect' above which further increases in benefit value do not lead to further benefit redemption. This will be highly informative for subsequent PPR research. Investigators will leverage the existing infrastructure of the Vouchers 4 Veggies - EatSF produce prescription program to ensure feasibility.

Study Type

Interventional

Enrollment (Actual)

242

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • San Francisco, California, United States, 94110
        • University of California, San Francisco

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Individual enrolled in a First Five Program at El Concilio California, located in Stockton, CA
  • Age 18+
  • English or Spanish speaking
  • Literacy sufficient to complete a written survey
  • Technologic capacity to complete an online survey

Exclusion Criteria:

  • non English or Spanish speaking
  • cognitive impairment severe enough to interfere with understanding of the survey or consent form, whether due to cognitive delay, substance abuse, dementia, mental illness, or other etiologies
  • Not enrolled in a First Five Program at El Concilio California
  • Actively receiving another V4V/EatSF card

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Health Services Research
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Arm 1 - 10% TFP
Participants will receive $40/month in fruit and vegetable benefits for 6 months ($240 total).
Behavioral: Monetary benefit to purchase fruits and vegetables
Participants will receive varying benefit amounts to purchase fruits and vegetables.
Active Comparator: Arm 2 - 20% TFP
Participants will receive $80/month in fruit and vegetable benefits for 6 months ($480 total).
Behavioral: Monetary benefit to purchase fruits and vegetables
Participants will receive varying benefit amounts to purchase fruits and vegetables.
Active Comparator: Arm 3 - 30% TFP
Participants will receive $110/month in fruit and vegetable benefits for 6 months ($660).
Behavioral: Monetary benefit to purchase fruits and vegetables
Participants will receive varying benefit amounts to purchase fruits and vegetables.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Benefit redemption
Time Frame: Monthly for 6 months
Dollar amount of benefits redeemed (numerator) over total dollar amount of benefits distributed (denominator)
Monthly for 6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Fruit and vegetable consumption
Time Frame: 0, 3, and 6 months
Measured by NCI Dietary Screener Questionnaire (DSQ) and reported in cup-equivalents, a higher score indicates greater fruit and vegetable intake (better outcome)
0, 3, and 6 months
Food security status
Time Frame: 0, 3, and 6 months
Measured by USDA 18-item food security module. A higher score indicates more severe food insecurity (worse outcome); Scores converted to Rasch measurement scale, with a higher score indicates more severe food insecurity
0, 3, and 6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of California, San Francisco

Collaborators

American Heart Association

Investigators

  • Principal Investigator: Hilary Seligman, MD, MAS, University of California, San Francisco

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2024

Primary Completion (Actual)

December 31, 2024

Study Completion (Actual)

December 31, 2024

Study Registration Dates

First Submitted

July 17, 2023

First Submitted That Met QC Criteria

July 28, 2023

First Posted (Actual)

August 7, 2023

Study Record Updates

Last Update Posted (Actual)

January 30, 2026

Last Update Submitted That Met QC Criteria

January 28, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • A999999

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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