Table 2.

Difference in Unified Theory of Acceptance and Use of Technology total scores^a by participant and domain between the beginning of phase 1 or 2 and end of phase 3 (detailed results in Multimedia Appendix 5).

Participant numberb			1		2		3		4		5		6		7		8		9		10		Values, mean
Total score
	Phase 1 or 2	89		63		86		81		87		79		66		75		71		77		77
	Phase 3	74		76		80		74		77		72		N/Ac		80		79		72		76
	Difference	−15		13		−6		−7		−10		−7		N/A		5		8		−5		−2.7
Difference by domains
	Performance expectancy	−2		3		1		1		−1		−1		N/A		1		1		0		0.33
	Effort expectancy	−2		4		1		−1		1		−1		N/A		0		0		1		0.33
	Social influence	−3		3		1		0		−2		−1		N/A		−1		1		−1		−0.67
	Voluntariness	−3		−3		−5		−2		−3		−3		N/A		2		3		−4		−2
	Intention to use	−2		3		−4		−4		−6		0		N/A		2		3		0		−0.9
	Facilitating conditions	−3		3		0		−1		1		−1		N/A		1		0		−1		−0.1

^aScores for individual questions from 1 (strongly disagree) to 5 (strongly agree). The domain scores ranged from 5 to 15. The total score for all the domains ranged from 30 to 90.

^bParticipants 1 to 5: phase 1 and phase 3; participants 6 to 10: phase 2 and phase 3.

^cN/A: not applicable; participant 7 expired before phase 3.