Table 2.

Qualitative studies on scalability assessment considering the problem, intervention, and context domains for scale-up.

Domain	Research focus	Research type	Data collection technique	Data analysis technique	Studies, n	Reference
Problem	Problem description	Qualitative	Document analysis	Narrative summary	13	[27-39,46-50]
Intervention	Intervention description	Qualitative	Document analysis	Narrative summary	12	[27-35,37-39]
Context	Context description	Qualitative	Document analysis	Narrative summary	10	[28-34,37-39]