Table 2.

Spearman Correlation Analysis of Each Variable

Variables	a	b	c	d	e	f	g	h	i	j	k
Physical exercise	1
Withdrawal symptoms	−0.606**	1
Protrusive behavior	−0.607**	0.797**	1
Social soothing	−0.587**	0.731**	0.679**	1
Mood alteration	−0.589**	0.794**	0.807**	0.703**	1
Mobile phone addiction	−0.664**	0.939**	0.899**	0.842**	0.900**	1
Depression	−0.626**	0.746**	0.755**	0.690**	0.739**	0.811**	1
Anxiety	−0.622**	0.752**	0.749**	0.701**	0.745**	0.814**	0.882**	1
Stress	−0.616**	0.763**	0.758**	0.707**	0.753**	0.824**	0.891**	0.903**	1
Negative emotion	−0.646**	0.784**	0.782**	0.727**	0.773**	0.850**	0.953**	0.959**	0.968**	1
E-health literacy	0.560**	−0.657**	−0.675**	−0.595**	−0.656**	−0.714**	−0.730**	−0.727**	−0.735**	−0.759**	1

Notes: a=physical activity; b=withdrawal symptoms; c=protrusive behavior; d=social soothing; e=mood alteration; f= mobile phone addiction; g=depression; h=anxiety; i=stress; j=negative emotion; k= e-health literacy; **P < 0.01.