Shared psychological characteristics that are linked to aggression between patients with Internet addiction and those with alcohol dependence

Table 1 Comparison of clinical characteristics, personality, and temperament between patients with Internet addiction, those with alcohol dependence and healthy controls

	Internet addiction (N = 30)		Alcohol dependence (N = 30)		Healthy control (N = 30)		p value	Post hoc tests
	Mean	SD	Mean	SD	Mean	SD	p value	Post hoc tests
Age (years)	22.67	6.69	30.03	5.89	25.33	2.77	<.001	A > H > I
Education (years)	15.47	8.00	13.40	2.37	14.80	1.67	.131
Duration of illness	11.17	5.64	12.67	6.10
BDI	17.00	10.90	22.73	13.79	3.43	4.34	<.001	I = A > H
BAI	16.07	12.73	18.67	13.59	3.77	3.63	<.001	I = A > H
IAT	76.33	5.79
AUDIT-K			25.07	6.70
NEO-PI-R
Agreeableness	38.03	5.78	37.33	6.09	42.63	4.55	.001	H > I = A
Conscientiousness	33.33	8.44	36.43	9.93	42.50	5.09	<.001	H > I = A
Extraversion	34.87	7.71	36.37	8.50	42.27	4.13	<.001	H > I = A
Neuroticism	39.13	7.11	39.07	8.37	28.50	6.69	<.001	I = A > H
Openness to experience	36.70	5.31	36.47	4.08	39.83	4.21	.008	H > I = A
BIS-11
Cognitive	18.33	3.63	19.50	3.85	16.43	2.42	.006	A > I = H
Motor	22.83	6.90	23.37	7.29	17.47	4.71	<.001	I = A > H
Nonplan	27.07	5.75	28.57	5.35	22.67	2.56	<.001	I = A > H
Total	68.40	14.95	71.43	14.39	56.57	7.59	<.001	I = A > H
Anger expression
State	26.07	14.15	22.67	15.23	10.77	1.50	<.001	I = A > H
Trait	22.90	5.02	23.70	8.18	17.70	5.48	.001	I = A > H

Kruskal–Wallis test was used to compare distribution of ranks across the three groups. For post hoc comparison, Mann–Whitney U test with a Bonferroni correction was used.

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