TY - JOUR AU - R. M. Satherley AU - J. Newham AU - E. Cecil AU - J. Forman AU - C. Kelly AU - I. Wolfe AU - R. Lingam A1 - AB - OBJECTIVE: A process evaluation of the Children and Young People's Health Partnership (CYPHP) model of integrated care for the interpretation of trial findings and building evidence on the implementation of integrated care for children. DESIGN: A mixed-methods process evaluation. SETTING: CYPHP was implemented at scale across two inner-city London boroughs in South London, England, as a pragmatic cluster-randomised controlled trial involving nearly 98 000 children, with a nested process evaluation. PARTICIPANTS: Linked data were available from 73 000 participants. Qualitative data collection was through 102 interviews (group and 1:1) and observations. INTERVENTIONS: Local child health clinics delivered by paediatricians and general practitioners and a nurse-led early intervention service for children with tracer conditions (asthma, eczema and constipation), decision support, a primary care hotline, self-management support and health promotion. MAIN OUTCOME MEASURES: Five domains of the RE-AIM implementation framework: Reach, Effectiveness, Adoption, Implementation and Maintenance. RESULTS: Implementation varied depending on resource availability, competing priorities and natural changes over time. Successful implementation drivers included cohesive interprofessional and partnership collaboration. CONCLUSIONS: Integrated care for children can be implemented at scale, but variability, particularly low reach, may limit measurable impact at the population level. Significant health system strengthening, implementation plasticity and contextual tailoring are crucial for ensuring the efficacy and sustainability of impactful integrated care for children. TRIAL REGISTRATION NUMBER: NCT03461848. AD - School of Psychology, Department of Psychological Interventions, University of Surrey, Guildford, UK.; Department of Women and Children's Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.; Department of Psychology, Faculty of Health and Life Sciences, Northumbria University, Newcastle Upon Tyne, England, UK.; Centre for Public Health, Institute of Clinical Science, Queen's University Belfast, Belfast, UK.; Department of Women and Children's Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK ingrid.wolfe@kcl.ac.uk.; Population Child Health Research Group, School of Clinical Medicine, University of New South Wales, Sydney, New South Wales, Australia. AN - 39904570 BT - Arch Dis Child C5 - Healthcare Disparities CP - 8 DA - Jul 18 DO - 10.1136/archdischild-2024-327664 DP - NLM ET - 20250718 IS - 8 JF - Arch Dis Child LA - eng N2 - OBJECTIVE: A process evaluation of the Children and Young People's Health Partnership (CYPHP) model of integrated care for the interpretation of trial findings and building evidence on the implementation of integrated care for children. DESIGN: A mixed-methods process evaluation. SETTING: CYPHP was implemented at scale across two inner-city London boroughs in South London, England, as a pragmatic cluster-randomised controlled trial involving nearly 98 000 children, with a nested process evaluation. PARTICIPANTS: Linked data were available from 73 000 participants. Qualitative data collection was through 102 interviews (group and 1:1) and observations. INTERVENTIONS: Local child health clinics delivered by paediatricians and general practitioners and a nurse-led early intervention service for children with tracer conditions (asthma, eczema and constipation), decision support, a primary care hotline, self-management support and health promotion. MAIN OUTCOME MEASURES: Five domains of the RE-AIM implementation framework: Reach, Effectiveness, Adoption, Implementation and Maintenance. RESULTS: Implementation varied depending on resource availability, competing priorities and natural changes over time. Successful implementation drivers included cohesive interprofessional and partnership collaboration. CONCLUSIONS: Integrated care for children can be implemented at scale, but variability, particularly low reach, may limit measurable impact at the population level. Significant health system strengthening, implementation plasticity and contextual tailoring are crucial for ensuring the efficacy and sustainability of impactful integrated care for children. TRIAL REGISTRATION NUMBER: NCT03461848. PY - 2025 SN - 0003-9888 (Print); 0003-9888 SP - 603 EP - 611+ ST - Implementation of the children and young people's health partnership model of paediatric integrated care: a mixed-methods process evaluation T1 - Implementation of the children and young people's health partnership model of paediatric integrated care: a mixed-methods process evaluation T2 - Arch Dis Child TI - Implementation of the children and young people's health partnership model of paediatric integrated care: a mixed-methods process evaluation U1 - Healthcare Disparities U3 - 10.1136/archdischild-2024-327664 VL - 110 VO - 0003-9888 (Print); 0003-9888 Y1 - 2025 ER -