Table 1.

Social situation and drug and alcohol use at time of admission (percentage distribution)

	Girls N = 541	Boys N = 1429	Total N = 1970	p
Living with parents	69	78	76	0.001*
Studies, practical placement or work	81	81	81	0.910
School problems	72	58	62	0.001*
Problems in childhood environment
Financial problems	31	24	26	0.002*
Substance abuse	43	28	32	0.001*
Mental health problems	46	27	32	0.001*
Violence/assault	35	20	24	0.001*
Placement in foster care/residential home	19	17	18	0.078
Arrested by police	46	67	61	0.001*
Convicted of crime	22	39	34	0.001*
Victim of crime	50	46	47	0.110
Exposed to violence/abuse
Physical	48	43	44	0,022*
Psychological	57	28	36	0.001*
Sexual	33	2	11	0.001*
Association with criminal/drug-abusing peers	66	65	65	0.655
Primary drug
Alcohol	21	10	13	0.001*
Cannabis	69	85	80	0.001*
Other drugs	10	5	7	0.001*
Frequent substance use#	57	51	53	0.041*
Age at onset (years)	14.87	15.19	15.10	0.044*
AUDIT-C	53	38	43	0.001*
Poly drug use	28	24	25	0.058
Prior substance abuse treatment	28	25	26	0.344

#Frequency of substance use 2–3 days/week or more

*=p < 0.05