Evaluating factors influencing the delivery and outcomes of an incentive-based behaviour change strategy targeting child obesity: protocol for a qualitative process and impact evaluation
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Updated: Mar 10, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Gemma Enright1,2, Alex Gyani2, Simon Raadsma2
1The George Institute for Global Health (Cardiovascular Division), Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
Insights
This study explores barriers and enablers for incentive-based childhood obesity programs. Understanding these factors improves community weight management strategies and future interventions for child obesity.
Area of Science:
- Public Health
- Behavioral Science
- Pediatrics
Background:
- Childhood obesity requires effective community-based weight management programs.
- Understanding behavior change mechanisms within these programs is crucial for optimizing effectiveness.
- Qualitative research can identify contextual factors influencing program outcomes.
Purpose of the Study:
- To determine barriers and enablers of an incentive-based behavior change strategy for child obesity.
- To inform the future translation and implementation of such programs.
- To understand contextual factors influencing the delivery and impact of interventions.
Main Methods:
- Qualitative analysis including stakeholder and family interviews, and focus groups.
- Collaboration with policymakers, researchers, and health professionals.
- Thematic analysis of data from participants in an Australian community weight management program RCT.
Main Results:
- Evaluation will provide insights into contextual and influencing factors affecting RCT outcomes.
- Identification of specific barriers and enablers to program delivery and impact.
- Understanding of how incentives influence behavior change in childhood obesity interventions.
Conclusions:
- Findings will assist in developing, implementing, and translating behavior change strategies for childhood obesity.
- Insights may be applicable to other chronic condition prevention programs.
- Enhancing the effectiveness of community-based interventions for obese children.
Introduction:
Community-based weight management programmes are important in addressing childhood obesity. However, the mechanisms that lead to behaviour change within the programmes are rarely studied within the context of the programmes themselves once they have been implemented. This means that further potential gains in the effectiveness of the programme are often not made and any potential losses of efficacy are often not noticed. Qualitative research alongside randomised controlled trials (RCTs) can tell us the context in which these programmes are implemented and elucidate potential mediators or modifiers of the programmes' effectiveness. The aim of this evaluation is to determine the barriers and enablers to the delivery and impact of an incentive-based behaviour change strategy targeting child obesity to inform future translation.
Methods And Analysis:
Qualitative analysis, including stakeholder and family interviews, focus groups and a survey, will be used. The research will be conducted in collaboration with policymakers, researchers and community health professionals. Participants will be selected from programme providers, and parents/carers and children participating in an Australian community weight management programme during an RCT examining the effectiveness of incentives for improving behaviour change. A maximum variation sampling method based on participant demographics and group characteristics will be used. Thematic analysis will be carried out inductively based on emergent themes, using NVivo V.9.
Ethics And Dissemination:
This research is approved by the South West Sydney Human Ethics Committee review body (HREC/14/LPOOL/480). The evaluation will provide information about the contextual and influencing factors related to the outcomes of the RCT. The results will assist researchers, community health practitioners and policymakers regarding the development, implementation and translation of behaviour change strategies in community initiatives for obese children. Insights gained may be applicable to a range of chronic conditions where similar preventive intervention approaches are indicated.
Trial Registration Number:
ACTRN12615000558527, Pre-results.
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