Table 2.

Group comparisons in SPS-A levels according to iPhone and Android metrics.

	Duration of use (minutes)		Number of unlocksa		Number of notificationsa
	Mean difference	p-Value	Z	p-Value	Z	p-Value
iPhone metrics
High - Low	0.70	<.001	7.31	<.001	5.05	.052
High - Medium	0.38	<.001	4.45	<.001	3.44	<.001
Low - Medium	0.32	<.001	−3.96	<.001	−2.38	<.001
Android metrics
High - Low	0.70	<.001	3.13	.05	NS	NS
High - Medium	0.45	<.001	2.14	.09	NS	NS
Low - Medium	0.25	.004	−1.47	.42	NS	NS

^aNon-parametric ANOVA.