Table 2.

Meanings associated with terminology (some studies referred to several concepts).

Terms and associated meanings		Occurrences [references], n
Acceptability
	Perceived usefulness	14 [51-64]
	User satisfaction	11 [54,55,57,60,65-71]
	System usability	8 [48,57,67,72-76]
	User feedback	8 [52,53,61,73,75,77-79]
	Rate of recommendation	8 [51,53,54,61,62,73,79,80]
	Actual usage	8 [64,79,81-86]
	Perceived efficiency	6 [51,59,66,73,79,86]
	Perceived ease of use	5 [52,53,63,64,73]
	Intention to use	5 [46,47,50,64,87]
	User engagement	4 [58,79,81,88]
	User enjoyment	4 [51,58,64,79]
	Attitude toward using	2 [49,64]
	Quality of the system	1 [64]
Acceptance
	Perceived usefulness	5 [64,89-92]
	Intention to use	5 [64,87,90,91,93]
	Actual usage	5 [64,85,90,91,94]
	User satisfaction	4 [71,89,93,95]
	Perceived ease of use	3 [64,90,91]
	Attitude toward using	3 [64,90,91]
	Perceived efficiency	2 [89,93]
	System usability	2 [76,96]
	Quality of the system	2 [64,93]
	User feedback	1 [97]
	User enjoyment	1 [64]
Adoption
	Actual usage	7 [84-86,91,98-100]
	Intention to use	3 [91,101,102]
	Perceived usefulness	2 [63,91]
	Perceived ease of use	2 [63,91]
	Perceived efficiency	1 [86]
	Attitude toward using	1 [91]