Table 1

Baseline characteristics by childhood adversities

		Childhood adversities
		0	1–2	>2
		(n=8376)	(n=8449)	(n=3677)
Characteristic	Number	Per cent	Per cent	Per cent	Significance
Gender					<0.001
Men	8556	45	42	35
Women	11 946	55	58	65
Age group (years)					<0.001
20–24	5771	32	26	24
30–34	4866	24	22	27
40–44	4832	22	24	26
50–54	5033	22	28	23
Marital status					<0.001
Single/divorced/widowed	6781	34	32	34
Married/cohabiting	13 707	66	68	66
Occupational education					<0.001
Basic	6433	30	32	35
Vocational school	4666	22	24	24
College	6417	32	31	31
University	2781	16	13	10
Smoking					<0.001
Never	8667	53	44	35
Ex-smoker	5214	25	29	33
Current	4938	22	27	32
Physical activity					0.667
No	4352	22	22	21
Yes	15 718	78	78	79
High alcohol intake (>16 drinks/week)					<0.001
No	19 294	95	95	92
Yes	1179	5	5	8
BMI (kg/m²)					<0.001
<20	2055	11	9	10
20–25	10 606	53	51	52
25–30	5906	28	30	28
>30	1823	8	10	10
Pet					<0.001
No	11 979	60	58	55
Yes	8523	40	42	45
Parents’ smoking					<0.001
No	9508	57	44	27
Yes	10 994	43	56	73
Prescribed antiallergy drugs					0.9669
No	18 958	93	92	92
Yes	1544	7	9	8
Symptoms of SNS hyperactivity (quartile)					<0.001
Lowest	4035	23	18	16
Second	5288	28	26	22
Third	6302	30	31	31
Highest	4823	19	25	31
General feeling of stressfulness (quartile) Reeder					<0.001
Low	5747	32	27	23
Medium low	6333	33	31	29
Medium high	4010	19	20	20
High	4204	16	22	28
Depression (BDI)					<0.001
No	19 534	98	95	92
Yes	837	2	5	8
Psychotropic medication					<0.001
No	19 421	96	95	92
Yes	1081	4	5	8
Hospitalisation due to psychiatric disorder
No	20 382	99.7	99.3	99	<0.001
Yes	120	0.3	0.7	1

BDI, Beck Depression Inventory; BMI, body mass index; SNS, sympathetic nervous system.