Vegetables for All Evaluation Kenya

NCT05992376 | Completed

• 1 other identifier: 424604
• Study Type: interventional
• Target: 4,213
• Locations: 1 country
• Sites: 1

Brief Summary

Global Alliance for Improved Nutrition (GAIN)'s "Vegetables for All" program in Kenya seeks to improve consumption of healthy foods by improving supply, increasing demand, and improving the enabling environment for different vegetables by operating at multiple levels - individuals, households, markets, producers, and policies. RTI and local partners propose to conduct impact and process evaluations of GAIN's program tailored to the theory of change. The evaluation will include a mix of quantitative and qualitative methods and will be guided by the RE-AIM (reach, effectiveness, adoption, implementation, and maintenance) evaluation framework.

Conditions

Vegetable Consumption

Keywords

diet; vegetables; market intervention; social and behavior change communication intervention; children; Kenya

Outcome Measures

Primary Outcomes (1)

• Grams of Vegetables Consumed

  Change in the mean grams of vegetables consumed during the last 24 hours by children 3-11 years old in BoP households in Fit Food Zones

  Baseline (September 2023), endline (September 2025) (2 years)

Study Arms (2)

Intervention

ACTIVE COMPARATOR

Behavioral: Food system and demand generation

Control/No Intervention

NO INTERVENTION

Interventions

Food system and demand generation BEHAVIORAL

The Vegetables for All program will create FitFood Zones (FFZs) in low-income estates in urban and peri-urban areas with a minimum of 1,000 households and 10 mama mbogas. FFZs are the last mile/point of purchase for delivering a variety of fresh, safe, and accessible vegetables to BoP households. The program will support mama mbogas to source vegetables from Good Agricultural Practices (GAP)-compliant suppliers, support the uptake of digital solutions for mama mbogas to access vegetables, create business-to-business mentorship opportunities, and support county governments to improve market infrastructure. To encourage BoP parents of children 3-11 years to buy and consume more vegetables, the program will include a demand generation component. This will be implemented through a communication campaign, including above-the-line (ATL) activities (mass media such as radio and television), below-the-line (BTL) activities (market activations and others), and FFZ branding.

Intervention

Eligibility Criteria

• Age: 18 Years+
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Reside in the FFZs assigned;
• Be a woman between 18-49 years old;
• Have a child 3-12 years old
• The household earns \<$3.20 per person per day;
• Be able to speak one of the main local languages and/or Kiswahili;
• Provide informed consent to participate in the study.
• Mama Mboga Surveys
• Be a mama mboga retailer of vegetables in a FFZ in the districts selected for the evaluation;
• Be in business for at least 6 months
• Be over 18 years old;
• Be able to speak one of the main local languages and/or Kiswahili;
• Provide informed consent to participate in the study.
• In-depth interviews with value chain actors
• Be a vegetable supplier to mama mbogas as part of the FFZ, are involved in demand generation activities, or involved in food safety compliance;
• Be over 18 years old;

Sponsors & Collaborators

• RTI International: lead
• Kula Vyema Centre of Food Economics: collaborator
• Jomo Kenyatta University of Agriculture and Technology (JKUAT): collaborator

Study Sites (1)

Kula Vyema Centre of Food Economics

Kiambu, Kenya

Location

Study Officials

• Simon Kimenju, PhD, MSc

  Kula Vyema Centre of Food Economics

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Senior Research Public Health Analyst

Model Details: Data will be collected through household surveys, mama mboga surveys, in-depth interviews (IDIs), and focus group discussions (FGDs). The protocol team has selected a subset of intervention FFZs for the evaluation and identified an equal number of geographic areas of similar size and level of urbanicity to serve as the controls.

Study Record Dates

• First Submitted: August 8, 2023
• First Posted: August 15, 2023
• Study Start: November 20, 2023
• Primary Completion: January 15, 2026
• Study Completion: January 15, 2026
• Last Updated: April 23, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will share

Locations

KE (1)