Table 2.

Bivariate association between smartphone addiction and suicide ideation and suicide attempt of study population.

Variables		Total		Suicide Ideation			Suicide Attempt
				Yes		p-Value	Yes		p-Value
		N	%	N	%		N	%
Total		54,948	100.0	5979	10.9		1121	2.0
Smartphone addiction						<0.0001			<0.0001
	General user group	41,173	74.9	3680	6.7		721	1.3
	Potential-risk user group	12,142	22.1	1860	3.4		305	0.6
	High-risk user group	1633	3.0	439	0.8		95	0.2
Sex						<0.0001			<0.0001
	Male	28,353	51.6	2254	4.1		382	0.7
	Female	26,595	48.4	3725	6.8		739	1.3
Grade						<0.0001			<0.9439
	High school	28,961	52.7	3013	5.5		592	1.1
	Middle school	25,987	47.3	2966	5.4		529	1.0
Academic achievement						<0.0001			<0.0001
	High	18,217	33.2	2486	4.5		531	1.0
	Moderate	16,585	30.2	1551	2.8		271	0.5
	Low	20,146	36.7	1942	3.5		319	0.6
Household income						<0.0001			<0.0001
	High	7212	13.1	1332	2.4		292	0.5
	Average	26,397	48.0	2639	4.8		447	0.8
	Low	21,339	38.8	2008	3.7		382	0.7
Residential type						<0.0001			<0.0001
	Lives with parents	52,332	95.2	5594	10.2		1011	1.8
	Lives without parents	2616	4.8	385	0.7		110	0.2
Sleep satisfaction						<0.0001			<0.0001
	Satisfied	16,824	30.6	974	1.8		188	0.3
	Moderate	18,656	34.0	1788	3.3		302	0.5
	Unsatisfied	19,468	35.4	3217	5.9		631	1.1
Fast food						<0.0001			<0.0024
	≤2 times/week	41,292	75.1	4268	7.8		799	1.5
	≥3 times/week	13,656	24.9	1711	3.1		322	0.6
Physical activity						<0.0066			<0.0403
	≤2 days a week	37,241	67.8	4145	7.5		728	1.3
	≥3 days a week	17,707	32.2	1834	3.3		393	0.7
Lifetime smoking experience						<0.0001			<0.0001
	Never	48,867	88.9	4773	8.7		769	1.4
	Ever	6081	11.1	1206	2.2		352	0.6
Alcohol consumption						<0.001			<0.001
	Never	49,056	89.3	4809	8.8		796	1.4
	Ever	5892	10.7	1170	2.1		325	0.6