Table 1.

Inclusion/exclusion criteria for article eligibility

	Included	Excluded
Participants	• Children (≤ 18 years) who are facing a health-related decision	• Children not treated as active participants in decision-making
	• Decisions about participation in health research	• Decisions not directly pertaining to their health or hypothetical decisions
Interventions	• Interventions to support children’s decision-making needs	• Interventions that support only the information needs of children
Design	• Randomized controlled trials	• Qualitative studies, descriptive studies, cohort studies
	• Non-randomized controlled trials	• Editorials, opinion articles
	• Interrupted time series
	• Controlled before-and-after
Outcomes	• Outcomes that affect the quality of the decision or the decision-making process for children/youth	• Studies that do not report at least one of the outcomes relating to the quality of the decision or the decision-making process
Language	• English or French	• Other languages
Publication status	• Published	• Unpublished studies
	• Peer-reviewed	• Non peer-reviewed