Table 2.

Model summary of hierarchical regression analyses that predicts alcohol use in the group of adolescents

Model	Variable	R2	Adjusted R2	SE	β	t	P-value
1	Sex	0.16	0.14	0.74	−0.16	−2.32	<0.01
	Age			0.59	0.22	3.29	0.02
	SES			0.34	0.28	4.03	<0.001
2	Sex	0.17	0.15	0.74	−0.17	−2.42	0.02
	Age			0.59	0.22	3.20	<0.01
	SES			0.34	0.28	4.08	<0.001
	School performance			0.00	0.12	1.77	0.08
	Absences			0.16	0.04	0.56	0.58
3	Sex	0.19	0.14	0.77	−0.16	−2.34	0.02
	Age			0.59	0.21	3.12	<0.01
	SES			0.34	0.28	4.07	<0.001
	School performance			0.01	0.11	1.56	0.12
	Absences			0.16	0.03	0.49	0.62
	Maternal control			0.08	−0.05	−0.62	0.54
	Maternal care			0.09	−0.02	−0.27	0.79
	Paternal control			0.08	0.08	0.90	0.37
	Paternal care			0.07	−0.07	−0.89	0.37
4	Sex	0.21	0.15	0.83	−0.12	−1.59	0.11
	Age			0.61	0.24	3.45	<0.01
	SES			0.35	0.26	3.80	<0.001
	School performance			0.01	0.11	1.55	0.12
	Absences			0.16	0.01	0.12	0.91
	Maternal control			0.08	−0.06	−0.65	0.52
	Maternal care			0.09	−0.05	−0.65	0.52
	Paternal control			0.08	0.09	0.97	0.33
	Paternal care			0.07	−0.07	−0.87	0.39
	Phobias			0.19	−0.00	−0.04	0.97
	Obsessions			0.19	0.03	0.33	0.74
	Depression			0.14	0.20	−2.17	0.03
	Entropy			0.18	0.14	1.41	0.16
	Diet			0.16	−0.07	−0.84	0.40

Notes: The research involved 198 Italian students (104 males and 94 females) in the 4th year (M =16.94 years, SD =0.35) and 5th year (M =17.94 years, SD =0.43) of senior secondary schools, who live in Caltanissetta, a town located in Sicily, Italy.

Abbreviations: β, beta standardized coefficients; M, mean; SD, standard deviation; SE, standard error; SES, socioeconomic status.