Table 8.

Differences among countries in the control and intervention arms. P values are obtained from the general linear model with the adjustment for age and gender.

Characteristic and arm		United Kingdom	Denmark	Portugal	P value
Number of visits, median (IQR)
	Control arm	17 (8-34)	20 (8-36)	13 (6.5-44)	.91
	Intervention arms	17 (10-26)	17 (9.5-25.5)	14 (7-24)	.12
Total duration in minutes, median (IQR)
	Control arm	54.8 (23.8-140.8)	65.7 (22.8-129.6)	45.7 (13.9-105.5)	.56
	Intervention arms	158.7 (81.1-274.3)	169.8 (87.7-280.9)	140.2 (73.6-249.2)	.58
Completion percentage of sessions, median (IQR)
	Control arm	N/Aa	N/A	N/A	N/A
	Intervention arms	71.4 (46-89.5)	76.2 (47.4-89.5)	68.4 (37.8-85.7)	.78
eHEALSb(range 10-40), mean (SD)
	Control arm	31 (5.1)	31.7 (5.34)	30.1 (4.76)	.27
	Intervention arms	31.2 (5.71)	31 (4.8)	29.8 (4.71)	.009
SUSc in UX3d, mean (SD)
	Control arm	70.8 (20.6)	65.8 (20.6)	74.6 (19.6)	.07
	Intervention arms	69.3 (20.6)	64.4 (20.5)	77.4 (17.3)	<.001
Overall score in UX3, mean (SD)
	Control arm	6 (2.4)	5.38 (2.57)	7.15 (1.92)	<.001
	Intervention arms	6.66 (2.12)	5.72 (2.41)	7.38 (1.78)	<.001
Likelihood of recommending in UX3, mean (SD)
	Control arm	5.39 (3.28)	4.82 (3.1)	7.39 (2.62)	<.001
	Intervention arms	6.64 (2.81)	5.69 (3.03)	7.77 (2.3)	<.001
Intention to continue in UX3, mean (SD)
	Control arm	5.59 (3.17)	5.22 (3.12)	6.74 (2.67)	.001
	Intervention arms	6.63 (2.8)	5.79 (3.05)	7.30 (2.44)	<.001
TAMMe total score in UX3, mean (SD)
	Control arm	3.5 (0.73)	3.29 (0.79)	3.69 (0.71)	.005
	Intervention arms	3.63 (0.71)	3.34 (0.7)	3.86 (0.66)	<.001

^aN/A: not applicable.

^beHEALS: eHealth Literacy Scale.

^cSUS: System Usability Scale.

^dUX3: user experience questionnaires at month 3.

^eTAMM: Technology Acceptance Model for Mobile Services.