Protocol for an umbrella review of the state-of-science on public and patient involvement in health and social care research with children, young people and families.

Background: Public and Patient Involvement (PPI) refers to the active collaboration of patients and the public in health and social care research decision-making, enhancing research success, cost-effectiveness, and impact. Children, young people, and their families bring unique lived experiences to PPI in research, relating to others with similar experiences, while factors like age, cognitive maturation, and developmental stage create differences between researchers and patients or the public. Collaboration with children, young people, and their families should be guided by specific project context and a strong evidence base. However, existing systematic reviews reveal inconsistencies in reporting and a lack of standardised methods for these groups, limiting effective PPI implementation. This protocol details methods for an umbrella review to identify the current state-of-science and future priorities for collaborating with children, young people and families in health and social care research. Methods: The protocol was developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) guidelines, which will also direct the reporting of findings. The Joanna Briggs Institute's methodology for conducting umbrella reviews will be adhered to throughout. MEDLINE, CINAHL, EMBASE, PsycINFO, Cochrane, DARE, JBI Evidence Synthesis, PROSPERO, grey literature databases, targeted international networks, and the Google search engine will be searched for systematic reviews on PPI with children, young people, and families in health and social care research. Two reviewers will independently conduct eligibility screening, data extraction, and quality appraisal. Conclusions: This umbrella review will provide critical insights into the state-of-science of PPI with children, young people and families in health and social care research. The synthesis of findings could yield important information for researchers and other stakeholders conducting health and social care research in collaboration with children, young people and families by highlighting key patterns, gaps, and recommendations to guide future PPI practices, policies, and research.RegistrationThis umbrella review was registered in PROSPERO, the International Prospective Register of Systematic Reviews (Prospero registration number: CRD42024608935, registered 14th of November 2024).