Table 1 Stressful family life events, current psychiatric symptoms, and previous delinquency of the 77 adolescent copycats with school shooting threats

yes

44

57

parental mental disorders

18

23

parental substance use problems

16

21

divorce process

7

9

severe disease of parent/s

7

9

severe problems related to sisters

7

9

domestic violence

4

5

(suspected) sexual abuse

2

3

bereavement

1

1

Current symptoms in the adolescent psychiatric evaluation

symptoms of anxiety

50

65

depressive symptoms

48

62

problems with impulse control

46

60

aggressive outbursts/tantrums

40

52

suicidal ideation

35

45

destroying property

32

42

non-physical aggression towards other people

31

40

violence against other people

31

40

attention problems

30

39

harmful use of alcohol

19

25

isolation

19

25

psychotic symptoms

18

23

truancy/school refusal

9

12

use of illicit drugs

6

8

symptoms of eating disorders

6

8

running away

6

8

suicide attempt

2

3

manic behavior

1

1

property crimes

0

0

inappropriate sexual behavior

0

0

self-harming behaviors

0

0

Delinquency prior the index threat

no

45

58

yes

21

27

pilfering/theft/burglary

15

19

traffic offence

14

18

robbery/assault/attempted homicide

9

12

drug offence

3

4

sex offence

2

3

not clear from files

11

14