Child opinions related to a core outcome set for school-based healthy lifestyle behavior interventions : the COCOS study

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Altenburg, Teatske M. and de Vries, Lotte W. and Barbeau, Kheana and Button, Alyssa and Cox, Ashley and de Lannoy, Louise and MacDonald, Mhairi and Naidoo, Rowena and Staiano, Amanda E. and Tremblay, Mark S. and Harrington, Deirdre M. (2025) Child opinions related to a core outcome set for school-based healthy lifestyle behavior interventions : the COCOS study. Frontiers in Public Health, 13. 1519467. ISSN 2296-2565 (https://doi.org/10.3389/fpubh.2025.1519467)

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Abstract

Introduction: Including children's perspectives developing health programs is a priority. This study gathered children's perspectives on outcomes in a Core Outcomes Set (COS), which they believe are important to measure in school-based healthy lifestyle behavioral interventions. Methods: Children aged 8–12 years from six countries across three continents participated in standardized interactive focus groups. An animation video was used to explain all relevant concepts (e.g., “intervention”, “outcomes”) and showed animated children engaging in a variety of lifestyle behaviors at school. Participating children then brainstormed and proposed outcomes they consider important to measure when evaluating a school-based “healthy lifestyle programme”. Next, children individually rated the importance of the outcomes using a traffic light system (red, “not important”; orange, “important”; green, “very important”). Similar outcomes (across focus groups and countries) were merged, and an overall importance rating was given to each outcome (across countries and overall). An outcome was considered important for inclusion in a COS if ≥70% of children scored the outcome as “very important” and <15% scored it as “not important”. Results: Children (n = 159) proposed 170 unique outcomes. Children proposed thirty-six outcomes in at least two countries, of which 20 outcomes received an overall rating of “very important” in all countries where the outcomes were reported. Of these 20, five outcomes were reported by children in at least four countries: being healthy, healthy diet, concentration, having fun, and feeling happy. Conclusion: Children reported a wide range of outcomes related to physical and mental health, as well as enjoyment and social skills, such as having fun and making friends. All outcomes reported by children in at least two countries and considered “very important” will be considered for inclusion in the consensus stage of developing a COS for school-based intervention studies aimed at childhood overweight and obesity prevention.

ORCID iDs

Altenburg, Teatske M., de Vries, Lotte W., Barbeau, Kheana, Button, Alyssa, Cox, Ashley, de Lannoy, Louise, MacDonald, Mhairi, Naidoo, Rowena, Staiano, Amanda E., Tremblay, Mark S. and Harrington, Deirdre M. ORCID logoORCID: https://orcid.org/0000-0003-0278-6812;
CORE (COnnecting REpositories)