Table 1.

Adolescent- and parent-related variables by off-springs’ school type (N = 183,226)

	Comprehensive		Upp. secondary		Vocational		All
	(n = 99,597)		(n = 46,644)		(n = 36,985)
	Boys %	Girls %	Boys %	Girls %	Boys %	Girls %	Boys %	Girls %	All %
Snus use
Daily	3	<1	6	<1	5	<1	4	<1	2
Sometimes	12	2	14	3	21	4	12	2	7
Tried once	10	7	10	9	12	13	10	8	9
Not at all	75	91	70	88	62	83	74	90	82
p-value	<0.001		<0.001		<0.001		<0.001
Smoking
Daily	16	13	10	11	40	40	20	17	19
Weekly	4	5	5	5	5	5	5	5	5
Less than weekly	7	10	12	15	7	9	9	11	10
Not currently	15	13	16	15	15	16	15	14	15
Not at all	58	59	57	54	33	30	51	52	51
p-value	<0.001		<0.001		<0.001		<0.001
Alcohol use
Weekly or more	8	6	14	9	25	18	13	9	11
Twice monthly	16	17	29	30	31	33	22	23	23
Once monthly	10	12	14	18	13	15	12	14	13
Less than monthly	22	23	18	21	15	19	20	22	21
Not at all	44	42	25	22	16	15	33	32	32
p-value	<0.001		<0.001		<0.001		<0.001
Attitude towards smoking
Yes, I accept smoking	65	65	74	71	82	84	71	70	71
Elsea	35	35	26	29	18	16	29	30	29
p-value	0.027		<0.001		<0.001		<0.001
Attitude towards alcohol use
Yes, I accept the use	70	56	80	63	78	65	74	60	67
Elseb	30	44	20	37	22	35	26	40	33
p-value	<0.001		<0.001		<0.001		<0.001
Parental smoking
Yesa	35	37	24	28	43	48	35	36	35
No	65	63	76	72	57	52	65	64	65
p-value	<0.001		<0.001		<0.001		<0.001
Parental educationc
Primary or secondary	59	63	46	52	74	80	60	63	61
Higher education	41	37	54	48	26	20	40	37	39
p-value	<0.001		<0.001		<0.001		<0.001

Adolescent-related variables: adolescents’ snus use, smoking and alcohol consumption as well as attitudes towards smoking and alcohol; parent-related variables: parental smoking and education; School type: CS comprehensive school, USS upper secondary school, VS vocational school; Statistical evaluation was done by chi-square test

^aAt least one of the parents smoked

^bElse: answer included options: I don’t accept or I don’t know

^cThe highest educational level at least one of the parents completed (Primary or secondary level included CS, USS, VS; Higher level included: vocational degree or university or polytechnics)