Table 2.

Inclusion groups

Inclusion groups	Age (years)	Sample selection mode	Included (count)	Responded (count)	Response rate (%)
Adults
Rehabilitation, outpatients	≥16	Consecutive, all included	242	122	50.4
Somatic, inpatients	≥16	Random	443	254	57.3
Somatic, outpatients	≥16	Random	381	219	57.5
Psychiatry, inpatients	≥18	Consecutive, all included	287	67	23.3
Psychiatry, outpatientsa	≥18	Consecutive, all included	500	149	29.8
Children
Somatic, inpatients	<16	Consecutive, all included	459	241	52.5
Psychiatry, outpatientsa	<16	Consecutive, all included	500	173	34.6
Total
			2812	1225b,c	43.6

Sample selection mode, sample size, and responses from postal distribution.

^a Additional inclusion criterion: Minimum three consultations between 1 August and 30 November 2008.

^b 26 respondents among these individuals described a contact with alcohol and substance dependency care (9 inpatients and 17 outpatients), and are included accordingly in the analysis file.

^c The table is based on the file used for postal distribution and contains one case more than the analysis file. This difference cannot be accounted for as the files are never merged.