Alcohol Use Parameters		Age (yrs)						p chi-square (c²) test
		12 - 13		14 - 15		>15
		Ν	%	Ν	%	Ν	%
Recent¹ alcohol use	No	107	69.5	128	45.2	159	32.7	<0.001
Recent¹ alcohol use	Yes	47	30.5	155	54.8	327	67.3	<0.001
Beer consumption during the past year	None or 1 - 3 times a year	156	76.8	205	59.2	253	45.9	<0.001
Beer consumption during the past year	>1 - 3 times a year	47	23.2	141	40.8	298	54.1	<0.001
Wine consumption during the past year	1 - 3 times a year	147	72.4	212	61.3	265	48.1	<0.001
Wine consumption during the past year	>1 - 3 times a year	56	27.6	134	38.7	286	51.9	<0.001
Spirits consumption during the past year	1 - 3 times a year	169	83.3	259	74.9	284	51.5	<0.001
Spirits consumption during the past year	>1 - 3 times a year	34	16.7	87	25.1	267	48.5	<0.001
Drunkenness incident during the past year	No	31	86.1	97	61.0	203	53.0	0.001
	One time in two months or more frequently	3	8.3	35	22.0	83	21.7
	One time a year	2	5.6	27	17.0	97	25.3