Table 2.

Relevant aspects of the included studies.

Variable			Frequency		Citation
Level of socioeconomic development in the study country
	Middle-income country	8		[37-42,45,46]
	High-income country	3		[43,44,47]
Study design
	Qualitative study	9		[37,39-42,44-47]
	Quasiexperimental study	1		[44]
	Multisite trial	1		[42]
Disease addressed in the study
	Diabetes	7		[38,39,41,43,45-47]
	Diabetes and hypertension	1		[44]
	Chronic diseases	3		[37,40,42]
Digital tool used for telehealtha
	Video	2		[37,45]
	App	3		[38,43,45]
	Smartphone	3		[39,43,46]
	Digital platform	2		[40,42]
	Website	1		[41]
	Visual media	3		[37,38,45]
	Clinical decision support system	1		[44]
	Cloud-based mobile tool	2		[45,47]
	Mobile health tool	1		[46]
	Internet-based interactive support system	2		[39,45]
	Email/WhatsApp message	1		[45]

^aMultiple tools have been used in individual studies.