Table 1:

Demographics, psychological tests, and pre- and postcognitive behavioral therapy data

	Internet Addiction (Mean)	Control (Mean)	P Value	PreTx (Mean)	PostTx (Mean)	P Value
	(n = 19)		P Value	(n = 12)		P Value
Sex (M/F)	9:10		1.0	8:4
Age (yr)	15.47 ± 3.06 (range, 11–22)		1.0	14.00 ± 1.95 (11–17)
IAT	63.32 ± 15.15	27.37 ± 4.83	< .001^{^a}	68.42 ± 14.74	52.58 ± 10.24	.001^{^a}
SAS	45.53 ± 7.40	17.89 ± 8.12	< .001^{^a}	45.83 ± 6.42	30.67 ± 6.85	< .001^{^a}
IAT+SAS	108.84 ± 20.19	45.26 ± 11.72	< .001^{^a}	114.25 ± 19.43	83.25 ± 15.52	< .001^{^a}
HRSD	3.53 ± 5.92	0 ± 0	.018^{^a}	2.00 ± 3.69	0.25 ± 0.62	.147
State STAI	46.11 ± 7.75	31.95 ± 9.99	< .001^{^a}	46.45 ± 8.55	43.82 ± 10.07	.441
Trait STAI	50.16 ± 7.54	39.05 ± 4.93	< .001^{^a}	49.27 ± 7.84	45.36 ± 7.89	.085
Total STAI	95.89 ± 14.56	71 ± 13.58	< .001^{^a}	95.06 ± 16.19	89.18 ± 17.55	.253
BIS	57.53 ± 7.63	45.58 ± 11.72	.001^{^a}	54.27 ± 6.94	52.45 ± 6.83	.093
ISI	6.89 ± 4.977	3.11 ± 2.558	.006^{^a}	5.17 ± 3.74	5.00 ± 4.43	.891
PSQI	5.95 ± 3.24	3.53 ± 1.87	.008^{^a}	4.67 ± 2.31	4.83 ± 2.92	.777
IQ	95.18 ± 2.88	98 ± 11.12	.467

Note:—PreTx indicates precognitive behavioral therapy; PostTx, postcognitive behavioral therapy; IAT, Internet Addiction Test; SAS, Smartphone Addiction Scale; HRSD, Hamilton Rating Scale for Depression; STAI, State-Trait Anxiety Inventory; BIS, Barratt Impulsiveness Scale; ISI, Insomnia Severity Index; PSQI, Pittsburgh Sleep Quality Assessment; IQ, intelligence quotient.
↵a P value ≤ .05