Table 2.

Problematic and pathological internet use: comparison of the clinical sample with a sample of nonreferred youth (school sample).

	Clinical sample (n = 111)		School sample (n = 389)		Cohen's d	t value	p value
	Mean	SD	Mean	SD
CIUS	14.78	13.75	11.15	8.0	0.32	6.43	<0.001
	%		%		Odds Ratio	95% CI	p
Problematic internet use	28.8%		11.0%		3.9	2.3–6.3	<0.001
Pathological internet use	20.7%		3.4%		7.0	3.7–13.3	<0.001