Table 1.

Overview over mixing of results

Themes	Subthemes	Mixing of results
Concepts of mental health	Young peoples’ understanding of mental health	Qualitative only
	Experts’ understanding of mental health in youth	Qualitative only
Current use of mHealth apps in young people	–	[QUAL + QUAN]
AI use in the context of mHealth apps	Young people on AI in everyday life	[QUAL + QUAN]
	Opportunities and risks seen by young people	[QUAL + QUAN]
	Opportunities and risks seen by experts	Qualitative only
Recommendations for AI–informed mHealth apps with EMA/EMIs	Young peoples’ recommendations in focus groups	[QUAL + QUAN]
	Experts’ recommendations	Qualitative only