Table 1 Demographics of the interview sample (N = 345: 220 high scoring individuals on the Mood and Feelings Questionnaire, i.e. MFQ > = 26 and 124 medium and low scorers, i.e. MFQ < 26: 1 missing on the MFQ) from a representative sample of 2432 adolescents from Central Norway, with a mean age of 15 years

Gender

   1. Girls

72.50%

   2. Boys

27.50%

Geography

   1. Inner city

19.10%

   2. Suburbs

19.10%

   3. Coast

14.80%

   4. Inland

47.00%

Parental socioeconomic status

   1. Professional leader (upper class)

9.60%

   2. Upper middle class

24.60%

   3. Lower middle class

15.40%

   4. Primary industry

7.80%

   5. Manual worker

41.20%

   6. No information

1.40%

Ethnicity

   1. Both parents Norwegian

91.60%

   2. One parent Norwegian

2.60%

   3. Both parents East-European

3.20%

   4. Both parents non-Western/non European

2.60%

Living arrangement

   1. Living with both parents

64.10%

   2. Living with mother

13.60%

   3. Living with father

4.30%

   4. With one parent and stepparent

13.60%

   5. Sharing time between parents

3.20%

   6. Living with grandparents/foster parents

1.20%