Children and adolescents in the intervention group received:

1. A group intervention once a week for about 20 weeks, including psychoeducation on mental health and drug abuse, anger management, roles within families, developing plans for the future, communication skills, sex education.
2. Access to schools and school material
3. Family visits
4. Their parents received training regarding agriculture and microcredit projects, and financial assistance
5. FORNET if affected by trauma-related symptoms, and/or acting aggressive
6. If needed medical assistance is provided
7. If needed legal assistance is provided

The control group was invited to participate in three interviews getting small amounts of money (~2,5 €) as decompensation of their time.

1. A group intervention once a week for about 20 weeks, including psychoeducation on mental health and drug abuse, anger management, roles within families, developing plans for the future, communication skills, sex education.
2. Access to schools and school material
3. Family visits
4. Their parents received training regarding agriculture and microcredit projects, and financial assistance
5. FORNET if affected by trauma-related symptoms, and/or acting aggressive
6. If needed medical assistance /.) If needed, legal assistance

27 items assessing PTSD, 4 additional items assessing dissociation on a scale from 0 - 4. Due to scoring rules, total sum score ranges from 0 to 80; sub scale intrusion: 0 - 20; sub scale avoidance: 0 - 8; sub scale negative cognitions: 0 - 28; sub scale hyperarousal: 0 - 24; higher values indicate more severe PTSD symptoms; all items are summed up for the total score

32 items; answer categories: yes or no; sum score ranges from 0 - 32

total sum score ranges from 0 - 100; sum score of each sub scale ranges from 0 - 10

during the last 14 days; sum ranges from 0 - 14