Table 1

Distributions of all variables used in the study by the year of data collection

		1983	1985	1987	1989	1991	1993	1995	1997	1999	2001	2003	2005	2007	2009	2011	2013
Gender
Boys	%	48	48	48	47	46	46	46	45	47	45	45	42	41	42	40	45
Girls	%	52	52	52	53	54	54	54	55	53	55	55	58	59	58	60	55
Alcohol use
Drunk weekly	%	0	0	1	1	1	1	1	2	2	1	1	1	1	0	0	0
Drunk monthly	%	4	3	5	7	8	10	8	11	11	9	6	5	4	5	3	2
Drunk occasionally	%	17	13	19	20	20	22	23	25	23	21	18	16	13	15	14	10
Drinks but not until drunk	%	28	25	27	26	30	28	31	28	31	29	30	26	22	27	21	21
Does not drink	%	50	58	46	45	39	38	36	33	32	35	43	50	60	53	61	66
Missing	%	1	1	2	1	1	2	1	1	2	5	3	3	0	1	1	0
Weekly disposable income
€17 or more	%	2	4	7	4	5	4	5	6	8	7	11	9	13	16	21	20
€10–€16	%	5	6	12	9	13	11	12	13	13	14	19	17	20	25	27	27
€7–€9	%	11	17	18	16	19	18	17	18	19	18	14	12	12	12	13	11
€5–€6	%	24	30	30	22	24	22	21	23	21	19	26	28	26	22	19	19
€3–€4	%	34	26	20	26	21	24	24	22	22	20	17	18	15	12	11	8
€2 or less (reference)	%	23	16	10	20	16	19	18	17	16	15	12	15	13	9	7	10
Missing	%	1	2	4	2	2	2	2	1	2	7	2	2	2	4	4	6
Place of residence
Metropolitan area	%	10	10	9	11	10	9	11	11	10	14	16	16	16	15	16	14
Cities	%	17	16	17	16	15	15	15	16	16	16	15	15	15	15	14	18
Towns	%	27	27	33	29	33	32	35	35	33	31	32	33	31	33	34	32
Villages	%	27	28	26	26	26	26	22	23	24	20	21	20	22	20	19	20
Rural areas	%	19	17	14	16	15	16	16	15	15	15	15	15	16	16	16	15
Missing	%	0	2	1	1	2	2	1	1	2	4	2	2	1	1	1	2
Father's/guardian's education
Basic	%	78	72	70	65	63	61	56	57	59	54	57	51	54	45	52	48
Secondary	%	12	13	12	13	15	17	18	15	13	13	12	14	12	11	12	11
Tertiary	%	10	11	13	16	17	18	20	23	21	23	25	28	33	41	37	40
Missing	%	0	4	5	6	5	5	6	5	6	11	5	7	0	2	0	1
Father's/guardian's professional status
Upper white collar	%	15	16	18	21	22	22	24	24	34	36	33	34	36	39	40	43
Lower white collar	%	25	25	27	27	27	29	29	29	22	20	24	25	23	23	16	17
Agriculture and forestry	%	13	11	10	9	9	7	6	6	7	6	6	6	6	4	6	6
Blue collar	%	46	46	43	42	39	40	37	38	35	35	34	32	32	31	36	31
Missing	%	1	2	2	2	4	2	3	2	3	3	2	2	3	3	2	4
Family structure
Nuclear family	%	80	79	78	79	77	77	76	75	74	73	75	74	76	76	79	78
Non-nuclear family	%	19	20	21	20	23	22	24	24	25	24	24	25	23	24	21	21
Missing	%	1	0	1	0	0	1	0	1	1	3	1	1	0	1	0	1
Total	N	3721	3353	8113	3105	7634	8189	8382	8390	8219	7292	6761	6503	5840	5516	4566	3535