Table 8.

Multiple linear regression analyzing predictive factors of smartphone addiction.

	β	t	p	VIF
(Constant)		25.831	0.000
Daily smartphone use time	.276	3.885	0.000***	5.682
Daily SNS use time	−.226	−3.569	0.000***	4.524
Daily instant mobile messenger use time	.021	0.558	0.577	1.655
Daily game use time	−.038	−1.235	0.217	1.048
Awareness of game overuse	−.094	−3.111	0.002**	1.030
Frequency of PC room use	.000	0.003	0.998	1.995
Expenditure for PC room use	−.055	−1.330	0.184	1.957

β: standardized regression coefficient; t: t value of β; VIF: variance inflation factor; SNS: social networking service.

^**p < 0.01; ***p < 0.001.