This scoping review synthesises the literature examining the multiple dimensions of access to health assessments; identifying the supply- and demand-side factors that impact access for people with intellectual disability. It concludes that supply-side factors are well-documented while demand-side factors warrant further investigation and research. 

Key supply-side factors include the availability and promotion of assessments by health services, practitioners’ views on their effectiveness, communication challenges and the provision of reasonable adjustments.

Demand-side factors, when studied, include communication challenges between the practitioners and the person with intellectual disability, the health literacy both of people with intellectual disability and their carers/supporters, and the level of involvement in, and engagement with, the process by carers/supporters.