Table 3.

Multiple regression analysis of PTSD and problematic smartphone use among adolescents (n = 2090).

	PTSD (n = 144, 6.9%)				Problematic smartphone use (n = 342, 16.4%)
Model	Unstandardized Coefficients		Standardized Coefficients		Unstandardized Coefficients		Standardized Coefficients
	B	Std. Error	Beta	Sig.	B	Std. Error	Beta	Sig.
Female	2.14	0.46	0.10	<0.001	0.37	0.60	0.01	0.539
Age	−0.46	0.35	−0.04	0.193	−0.21	0.46	−0.02	0.655
Grade	1.33	0.44	0.10	0.003	−0.15	0.58	−0.01	0.800
Only-child	−0.33	0.51	−0.01	0.526	1.02	0.67	0.03	0.126
People infected in their communities	2.33	1.00	0.05	0.020	2.49	1.30	0.04	0.057
Friend or relative infected	3.03	2.46	0.03	0.218	2.12	3.21	0.01	0.509
Felt extreme fear	7.78	0.64	0.258	<0.001	4.17	0.83	0.11	<0.001
Living in the worst-hit areas	2.57	1.36	0.04	0.058	2.73	1.77	0.03	0.123
Friend or relative died of COVID-19	−4.68	5.83	−0.017	0.422	−4.39	7.58	−0.01	0.563
Home-quarantine duration	0.51	0.36	0.03	0.162	−0.65	0.47	−0.03	0.172

Abbreviations: PTSD, Post-traumatic stress disorder.