WIC-Based Intervention to Promote Healthy Eating Among Low-Income Mothers

William Paterson University of New Jersey

Status: Completed

Conditions: Vegetable Intake; Cancer Prevention; Diet Modification

Treatments: Behavioral: Multilevel Behavioral Intervention

Study type: Interventional

Funder types: Other

Identifiers

NCT04038385

1R21CA230476-01

Details and patient eligibility

About

Whole grains, non-starchy vegetables, fruit, and beans are a consistent feature of diets associated with a lower risk of cancer and other diet-related diseases. For cancer risk reduction, the American Cancer Society recommendation is to consume at least 2.5 cups of a variety of fruits and vegetables daily. Other than dietary choices, weight control and physical activity levels are important modifiable determinants of cancer risk. This study finalized a novel, theory-driven farm-to-WIC intervention developed in preliminary work to promote vegetable intake among low-income adults served by the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). In New Jersey (the location of the study), WIC provides participants up to $30 in seasonal Farmers' Market Nutrition Program (FMNP) vouchers and monthly cash value vouchers or CVV (valued at $11 for adults and $8 for children at the time of the study) redeemable at farmers' markets. The program combined behaviorally focused nutrition education with the establishment of a WIC-based farmers' market (implemented in the summer of 2019 during the FMNP voucher issuance period). Content to address other modifiable determinants of cancer risk was added. To create additional opportunities for experiential and hands-on learning, monthly trips to an area farmers' market were held (between September 1, 2019 [after the WIC-based market was discontinued] and November 30, 2019 [the end of the local growing season]). The research employed an experimental design to initially test the intervention in 3 WIC agency sites (1 intervention and 2 control sites) with 297 urban, primarily Hispanic adults. Program effects on primary outcomes of vegetable intake (measured objectively using dermal carotenoids as a biomarker of intake and via self-report) and FMNP voucher redemption (objectively assessed using data provided by WIC) were examined at mid- and post-intervention (3 and 6 months post-baseline, respectively). Intervention effects on potential hypothesized mediators and the redemption of CVV at farmers' markets, participant satisfaction with the program, and the cost-effectiveness of the intervention also were examined.

Enrollment: 297 patients

Sex: All

Ages: 18 to 99 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• English- or Spanish-speaking
• Farmers' Market Nutrition Program (FMNP) voucher recipient or caregiver of a child FMNP voucher recipient
• Not less than 3 months from expected delivery date (pregnant women)
• Eligible to receive WIC benefits for 6 months after study entry

Exclusion criteria

● Restrictions of food intake (has food allergies or foods that cannot be eaten)

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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297 participants in 2 patient groups

Intervention

Experimental group

Description:

This group will receive routine services provided by WIC and an intervention that will combine behaviorally-focused nutrition education with 1) the establishment of a WIC-based farmers' market (implemented in 2019 during the WIC Farmers' Market Nutrition Program voucher issuance period \[June 19 to August 19\]), and 2) monthly trips to an area farmers' market (between September 1, 2019 and November 30, 2019 \[the end of the local growing season\]).

Treatment:

Behavioral: Multilevel Behavioral Intervention

Control

No Intervention group

Description:

This group will receive routine services provided by WIC only.