Table 4.

Pearson correlation among variables.

	Age	CUD	Somatization	Obsessive–compulsive	Interpersonal sensitivity	Depression	Anxiety	Hostility	Phobia	Paranoid ideation	Psychoticism
Daily caffeine intake	0.086**	0.246**	0.03	− 0.035	− 0.026	0.043	0.006	0.275**	0.225**	− 0.075**	− 0.096**
CUD severity	− 0.070*	1	0.353**	0.211**	0.133**	0.296**	0.343**	0.164**	0.337**	0.433**	0.363**

a = SCL-90 subscales, **correlation is significant at the 0.01 level, *correlation is significant at the 0.05 level.