Table 1 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: Determinants of access to primary care, which encompasses features of services and characteristics of users that may act as barriers or enablers to primary care access.

3. Context: Fee-for-service general practice, Government-managed general practice and Aboriginal Community Controlled Health Services.

4. Types of evidence sources: Published literature, including quantitative, qualitative, mixed methods study designs and commentaries.

1. Was published before September 1978, when primary health care was outlined by The Declaration of Alma-Ata.

2. Full text is not published in English.

3. Publication is a report of a research protocol, conference abstract or book review.