Table 2.

Eye-tracking and questionnaire measures by study arm.

Measure		Control	Intervention			P value Δ: control – intervention
		Overall	Overall	Box only
Eye tracking
	Time spent in minutes, mean (SD)	4.03 (2.39)	4.07 (3.68)	0.46 (0.31)		.96
	Average fixation duration in seconds, mean (SD)	0.445 (0.643)	0.337 (0.213)	0.316 (0.145)		.56
	Pupillary response in mm, mean (SD)	0.033 (0.011)	0.034 (0.017)	0.032 (0.014)		.91
Questionnaire
	Understandability, range 1-10, mean (SD)	6.6 (2.1)	6.6 (2.0)		N/A	.96
	Helpfulness for decision-making, range 1-10, mean (SD)	4.1 (2.2)	2.9 (1.3)		N/A	.09

^aN/A: not applicable.