Table 1.

Distribution of the main codes (some studies performed multiple measurements).

Themes and codes			Studies, n (%)
Given definition			68 (100)
Nature of given definition
	Operationalized	39 (58)
	Synonym	22 (32)
	Full definition	7 (10)
Cited reference for given definition
	Yes	13 (20)
	No	55 (80)
Intervention domain
	Mental health	55 (80)
	Health	12 (18)
	Both	1 (2)
Goal of assessing acceptance
	Inform design	13 (19)
	Evaluate a system	48 (71)
	Review the literature	7 (10)
Acceptance measurement
	Customized survey	39 (54)
	Standardized survey	13 (18)
	Usage	7 (10)
	Interviews (qualitative)	6 (9)
	Focus groups (qualitative)	5 (7)
	Adherence	1 (1)
	Completion of task	1 (1)
Measurement timeline
	Preuse	16 (19)
	Initial use	7 (10)
	Sustained use	42 (61)
	Unclear	1 (1)
	No measurement	6 (9)