Table 3. Distribution of alcoholic beverage among adolescents and youth.

Variables	Female	Male	Total
	n (%); 95%CI	n (%); 95%CI	n (%); 95%CI
Age at first dose
≤12	147 (36.1); 31.4-41.0	136 (44.0); 38.4-49.7	283 (39.5); 35.9-43.2
13-14	134 (32.9); 28.4-37.7	83 (26.9); 22.0-32.2	217 (30.3); 26.9-33.8
≥15	126 (31.0); 26.5-35.7	90 (29.1); 24.1-34.5	216 (30.2); 26.8-33.7
Days that have drunk in life
Non-user	333 (46.9); 43.2-50.7	267 (47.9); 43.7-52.2	600 (47.4); 44.6-50.2
New user/experimenting	260 (36.6); 33.1-40.3	190 (34.1); 30.2-38.2	450 (35.5); 32.9-38.2
Moderate user	83 (11.7); 9.4-14.3	59 (10.6); 8.1-13.5	142 (11.2); 9.5-13.1
Heavy user	34 (4.8); 3.3-6.6	41(7.4); 5.3-9.9	75 (5.9); 4.7-7.4
Doses that has drunk in the last 30 days
0	582 (81.9); 78.8-84.6	404 (72.8); 68.9-76.5	918 (72.5); 69.9-74.9
1-9	116 (16.3); 13.7-19.2	133 (24); 20.5-27.7	314 (24.8); 22.4-27.3
10-29	16 (2.3); 1.3-3.6	14 (2.5); 1.4-4.2	30 (2.4); 1.6-3.4
≥30	-	4 (0.7); 0.2-1.8	4 (0.3); 0.1-0.8
Drunkenness in the last 30 days
0	582 (81.9); 78.8-84.6	442 (79.5); 75.9-82.8	1,024 (80.8); 78.5-82.9
1-5	116 (16.3); 13.7-19.2	100 (18.0); 14.9-21.4	216 (17.0); 15.0-19.2
6-19	8 (1.1); 0.4-2.2	8 (1.4); 0.6-2.8	16 (1.3); 0.7-2.0
≥20	5 (0.7); 0.2-1.6	6 (1.1); 0.4-2.3	11 (0.9); 0.4-1.5

The total number may differ due to lost values. 95%CI: 95% confidence interval.