TABLE 5.

Smartphone overdependence at age 10 by temperament clusters at age 3.

Variables	At risk			At high risk
	Walds	Probability	Exp(B)	Walds	Probability	Exp(B)
Child sex (boys as reference)	29.713	0.000	0.472	20.382	0.000	0.516
Maternal education (2-year college or above as reference)	13.881	0.000	1.919	6.091	0.014	1.582
Paternal education (2-year college or above as reference)	0.414	0.520	1.119	0.346	0.557	1.115
Employed mother	5.036	0.025	1.373	5.501	0.019	1.426
Maternal daily stress	0.955	0.329	1.126	1.069	0.301	1.144
Maternal life satisfaction	11.098	0.001	0.703	14.654	0.000	0.652
Maternal subjective health	1.346	0.246	0.891	0.015	0.903	1.013
Family monthly income (Korean won)	3.414	0.108	1.000	5.790	0.016	1.000
Temperament type (Sociable type as reference)
Reactive	7.191	0.007	1.592	3.293	0.070	1.400
Cautious	15.639	0.000	1.921	8.208	0.004	1.654