Table 2 Inclusion and exclusion criteria

1. Population: People with intellectual disability, defined as permanent decreased intellectual function, present during developmental periods, before age 18. People with cerebral palsy, autism or other neurodevelopmental disorders are only included if they have a co-existing intellectual disability.

2. Concept: Barriers and facilitators to implementation of comprehensive health assessments/health checks as identified by clinicians in primary care (GPs and practice nurses).

3. Context: General practice / family medicine / primary care, in all countries (i.e. both high and low-income settings).

4. Types of evidence sources: Original research from peer-reviewed publications, including quantitative, qualitative, and mixed-method study designs.

1. Full text is not published in English.

2. Full text unavailable.

3. Publication is a report of a research protocol, book, book chapter, thesis, letter to editor, conference abstract, commentary, expert opinion, systematic or narrative review, or practice guidelines.