Unpacking the behavioural components and delivery features of early childhood obesity prevention interventions in the TOPCHILD Collaboration: a systematic review and intervention coding protocol

Brittany J. Johnson, Kylie E. Hunter, Rebecca K. Golley, Paul Chadwick, Angie Barba, Mason Aberoumand, Sol Libesman, Lisa Askie, Rachael W. Taylor, Kristy P. Robledo, Seema Mihrshahi, Denise A. O'Connor, Alison J. Hayes, Luke Wolfenden, Charles T. Wood, Louise A. Baur, Chris Rissel, Lukas P. Staub, Sarah Taki, Wendy SmithMichelle Sue-See, Ian C. Marschner, David Espinoza, Jessica L. Thomson, Junilla K. Larsen, Vera Verbestel, Cathleen Odar Stough, Sarah Jeanne Salvy, Sharleen L. O'Reilly, Levie T. Karssen, Finn E. Rasmussen, Mary Jo Messito, Rachel S. Gross, Maria Bryant, Ian M. Paul, Li Ming Wen, Kylie D. Hesketh, Carolina González Acero, Karen Campbell, Nina Cecilie Øverby, Ana M. Linares, Heather M. Wasser, Kaumudi J. Joshipura, Cristina Palacios, Claudio Maffeis, Amanda L. Thompson, Ata Ghaderi, Rajalakshmi Lakshman, Jinan C. Banna, Emily Oken, Maribel Campos Rivera, Ana B. Pérez-Expósito, Barry J. Taylor, Jennifer S. Savage, Margrethe Røed, Michael Goran, Kayla De La Haye, Stephanie Anzman-Frasca, Anna Lene Seidler, TOPCHILD Collaboration

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Introduction Little is known about how early (eg, commencing antenatally or in the first 12 months after birth) obesity prevention interventions seek to change behaviour and which components are or are not effective. This study aims to (1) characterise early obesity prevention interventions in terms of target behaviours, delivery features and behaviour change techniques (BCTs), (2) explore similarities and differences in BCTs used to target behaviours and (3) explore effectiveness of intervention components in preventing childhood obesity. Methods and analysis Annual comprehensive systematic searches will be performed in Epub Ahead of Print/MEDLINE, Embase, Cochrane (CENTRAL), CINAHL, PsycINFO, as well as clinical trial registries. Eligible randomised controlled trials of behavioural interventions to prevent childhood obesity commencing antenatally or in the first year after birth will be invited to join the Transforming Obesity in CHILDren Collaboration. Standard ontologies will be used to code target behaviours, delivery features and BCTs in both published and unpublished intervention materials provided by trialists. Narrative syntheses will be performed to summarise intervention components and compare applied BCTs by types of target behaviours. Exploratory analyses will be undertaken to assess effectiveness of intervention components. Ethics and dissemination The study has been approved by The University of Sydney Human Research Ethics Committee (project no. 2020/273) and Flinders University Social and Behavioural Research Ethics Committee (project no. HREC CIA2133-1). The study's findings will be disseminated through peer-reviewed publications, conference presentations and targeted communication with key stakeholders. PROSPERO registration number CRD42020177408.

Original languageEnglish
Article numbere048165
Number of pages9
JournalBMJ Open
Issue number1
Publication statusPublished - Jan 2022


  • community child health
  • paediatrics
  • preventive medicine
  • public health
  • behaviour change


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