Related Experiment Video
Updated: Jul 6, 2025

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
Published on: October 22, 2018
Evaluation of a Distribution Model to Increase Access to Affordable Fruits and Vegetables
Kerri L Vasold1, Karah Mantinan2, Rebecca Hofer2
1Altarum Institute, 3520 Green Ct #300, Ann Arbor, MI 48105 (Kerri.Vasold@altarum.org).
Introduction:
Identifying effective, sustainable strategies to increase fruit and vegetable consumption is critical to addressing chronic disease risk. Models that provide incentives for produce purchases through reduced-cost or no-cost produce shares are promising. The purpose of our study was to examine the impact on fruit and vegetable intake of Good Food for All, a community-based program to distribute no-cost produce boxes to participants with low incomes. We also assessed program satisfaction and future interest in purchasing an affordable produce box.
Methods:
The Good Food for All program was implemented in 22 US cities. Surveys were administered at baseline and postintervention. An online research panel was used as a comparison group and weighted to be demographically comparable to the intervention group. Descriptive statistics and adjusted difference-in-difference (ADID) models were used to examine differences in outcomes between groups.
Results:
Respondents (intervention n = 632; comparison n = 1,153) were primarily White, non-Hispanic, and female. Intervention participants had a greater increase in total fruit consumption frequency (ADID: 0.43 times/d; 95% CI, 0.21-0.64; P < .001), total vegetable consumption frequency (ADID: 0.52 times/d; 95% CI, 0.12-0.91; P = .01), and total fruit and vegetable consumption frequency (ADID: 1.03 times/d; 95% CI, 0.49-1.56; P < .001) than comparison respondents. Most intervention participants reported boxes contained the right amount of food (71.9%) and high-quality produce (68.4%) and were willing to purchase a future produce box (85.0%).
Conclusion:
Findings indicate that a produce box distribution model increased fruit and vegetable consumption, had high satisfaction among participants, and generated interest in purchasing affordable produce boxes. Future studies should explore feasibility of offering low-cost produce boxes at grocery stores and determine appropriate pricing models to enhance access and sustainability.
Related Concept Videos
Fruit Development, Structure, and Function
Key Elements for Plant Nutrition
Distribution Reliability and Automation
Distributions to Estimate Population Parameter
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
Pharmacokinetic Models: Comparison and Selection Criterion
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.

