Mapping the Landscape and Evidence of Cross-Sectoral Collaboration Models Targeting Individuals Referred for Assessment of Attention Deficit Hyperactivity Disorder or Autism Spectrum Disorder: Protocol for a Scoping Review

Introduction:
Neurodevelopmental disorders, notably Attention Deficit Hyperactivity Disorder (ADHD) and Autism Spectrum Disorder (ASD) present substantial challenges in mental health. Individuals referred for assessment in a psychiatric unit experience complex needs. This implies that their needs necessitate coordination across multiple sectors. Cross-sectoral collaboration models have emerged as essential strategies for addressing the complexities of these disorders. However, evidence on their implementation and success remains limited. This protocol aims to outline a Scoping Review where we will explore existing collaboration models, evaluate their implementation, and gain an understanding of how cross-sectoral collaboration models can be developed to ultimately benefit individuals referred for assessment for ADHD or ASD.

Methods and Analysis:
This scoping review will follow PRISMA-ScR. A comprehensive search will be conducted across PubMed, CINAHL, Embase, PsycINFO, and Google Scholar, as well as grey literature sources between 1 of December 2024 and 1 of January 2025. Inclusion criteria will encompass studies focusing on cross-sectoral collaboration for individuals referred for assessment of ADHD or ASD, published in English, Danish, Norwegian, or Swedish. The search will utilize a three-block search string, with iterative refinement guided by familiarity with the evidence base. Data extraction will involve study characteristics and implementation details, utilizing the Consolidated Framework for Implementation Research (CFIR) in combination with Proctor et al.'s implementation outcomes framework. Results will be synthesized into descriptive tables, providing a comprehensive mapping of existing models and emphasizing implementation feasibility.

Ethics and Dissemination:
Ethical approval is not required for this protocol since it involves the review of existing literature without the involvement of human participants or personal data. Findings from this scoping review will be disseminated at national and international conferences and will be integrated into future efforts to develop cross-sectoral collaboration models in Denmark.