Table 2.

Internal consistency and interrater reliability.

Scale		Cronbach α		Intraclass correlation coefficient (95% CI)
Objective quality
	Engagement	.78	0.69 (0.57-0.77)
	Functionality	.83	0.40 (0.20-0.54)
	Aesthetics	.89	0.61 (0.4-0.72)
	Information	.82	0.79 (0.23-0.75)
	Total Score	.81	0.70 (0.65-0.74)
Subjective quality		.88		0.75 (0.67–0.81)