Trial reportPloS one2019
Improving low fruit and vegetable intake in children: Findings from a system dynamics, community group model building study.
Trial report in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 11 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
50 citing papers in PubMed, 11 syntheses or guidelines pooled it.
- Participatory systems mapping: a review of population health research practice.Health research policy and systems · 2026Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2024Pooled it
- Pooled it
- Combining systems thinking approaches and implementation science constructs within community-based prevention: a systematic review.Health research policy and systems · 2023Pooled it
- Systematic Review of Reflection Spectroscopy-Based Skin Carotenoid Assessment in Children.Nutrients · 2023Pooled it
- Success of community-based system dynamics in prevention interventions: A systematic review of the literature.Frontiers in public health · 2023Pooled it
- Application of group model building in implementation research: A systematic review of the public health and healthcare literature.PloS one · 2023Pooled it
- What are the determinants of vegetable intake among adolescents from socioeconomically disadvantaged urban areas? A systematic review of qualitative studies.The international journal of behavioral nutrition and physical activity · 2022Pooled it
- Determinants of vegetable intake among urban socio-economically disadvantaged adolescents: a systematic review of quantitative studies.Public health nutrition · 2022Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2020Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2019Pooled it
- Impact and process evaluation of a primary-school Food Education and Sustainability Training (FEAST) program in 10-12-year-old children in Australia: pragmatic cluster non-randomized controlled trial.BMC public health · 2024Trial
- Using systems archetypes to understand system behaviour and identify leverage points for change in local obesity prevention in The Netherlands.Health promotion international · 2026Article
- Citizen science for healthier food environments: a realist-informed process evaluation of the big food map app in Flanders, Belgium.Frontiers in public health · 2026Article
- The local food system and dietary diversity among children aged 6-23 months in Ethiopia: a community-based cross-sectional survey.BMJ open · 2025Article
- Enablers and Challenges of Dietary Interventions and Change for Pacific Peoples Living in Aotearoa, New Zealand: A Scoping Review.Nutrition reviews · 2025Article
- Causal Loop Diagrams of Food Systems, Diet, and Obesity: A Scoping Review of Methods, Contextual Factors, and Outcomes.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025Article
- Applying system dynamics methods for local obesity prevention: results from a group model building study in Amsterdam, the Netherlands.Health research policy and systems · 2025Article
- Article
- Simulated retail food environments: A literature review of systems science approaches to advance equity in access to healthy diets.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many children globally do not meet government guidelines for daily fruit and vegetable intake, and in New Zealand, adherence to the vegetable intake recommendation is declining. This study aimed to identify systemic barriers to children meeting fruit and vegetable (FV) guidelines and generate sustainable actions within a local community to improve children's FV intake. A qualitative system dynamics method of community group model building was used. The research team partnered with Healthy Families Waitākere, a Ministry of Health funded prevention initiative, to recruit 17 participants (including students, parents, teachers, community leaders, local retailers and health promoters) from a low-income, ethnically-diverse community in West Auckland, New Zealand. Three group model building workshops were held during which a systems map was created and used to identify actions by considering causal pathways and reinforcing loops in the system. Barriers to children's FV intake identified by participants were the saturation of fast-food outlets in the community and ubiquitous marketing of these products, the high cost of fresh produce compared to fast food, and parents having little time for food preparation plus declining cooking skills and knowledge. Several actions to improve children's FV intake by improving the local food environment were identified, which will be co-designed further and tested by a collaborative group involving community leaders. This project highlights the effectiveness of group model building for engaging a local community in systems change to improve child nutrition, and supplies a blueprint for future qualitative system dynamics research.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.