Conclusion
PTSD and depression among Thai children affected by the tsunami was high among children in severe affected area. The prevalence of PTSD and depression decreased over time. Traumatic experiences and perception of threat or delayed evacuation during/ after the tsunami and older age were associated with PTSD and depres- sion. These results give guidance to inform the development of preventive interventions to improve the mental health of tsunami affected children and others affected by major natural disaster.