Table 1.

Summary of characteristics of inclusive health research in the questionnaire

In general
Recruitment
Description of recruitment process Representative sample of people with ID
Accessibility
Accessible information Feedback on accessible information Accessible research outcomes Time provided to discuss information Accessible resources Description of provision of accessible information Description of development of accessible information Task definitions
Facilitation
Acknowledgement of extra resources by funding bodies Sufficient amount of time provided Participation as early as possible Structured and described decision-making process Inclusive distribution of research outcomes Involvement in research agenda setting Attention on helper-relations Inclusive implementation of research outcomes
Reflection
Ethical reflection Reflection on justification
Evaluation
Insight into added value Evaluation on personal learnings Evaluation on mutual learnings
Specific to collaboration approach	Specific to control approach
Open, respectful and confidential atmosphere Relationship with research group Training during participation Partnership and shared decision-making power Power to influence research Training before participation Salary Remuneration Number of people with ID higher than professionals	Open, respectful and confidential atmosphere Engagement with research group Training during participation Power to influence research Training before participation Salary Complete decision-making power Remuneration Number of people with ID higher than professionals

ID, intellectual disabilities.