The Children's Revised Impact of Event Scale (CRIES) is a brief child-friendly measure designed to screen children at risk for Posttraumatic Stress Disorder (PTSD). It has good face and construct validity, a stable factor structure, correlates well with other indices of distress, and has been used to screen very large samples of at-risk-children following a wide range of traumatic events. However, few studies have examined the scale's validity against a structured diagnostic interview based on the DSM-IV criteria for PTSD. In the present study, the CRIES and the PTSD section of the Anxiety Disorders Interview Schedule-Child and Parent Version (ADIS-CP) were administered to a sample of children and adolescents (n=63) recruited from hospital accident and emergency rooms and the validity of the CRIES as a screening tool evaluated. Cutoff scores were chosen from this sample with a low base-rate of PTSD (11.1%) to maximize sensitivity and minimize the likelihood that children with a diagnosis of PTSD would fail to be identified. Cutoff scores were then cross-validated in a sample of 52 clinically referred children who had a high base-rate of PTSD (67.3%). A cutoff score of 30 on the CRIES-13 and a cutoff score of 17 on the CRIES-8 maximized sensitivity and specificity, minimized the rate of false negatives, and correctly classified 75–83% of the children in the two samples. The CRIES-8 (which lacks any arousal items) worked as efficiently as the CRIES-13 (which includes arousal items) in correctly classifying children with and without PTSD. Results are discussed in light of the current literature and of the need for further development of effective screens for children at-risk of developing PTSD.

This study evaluated the effectiveness of a school-based group intervention designed for children who have experienced trauma. Twenty-six children (aged 11-15 years) who were refugees or asylum-seekers from war-affected countries participated. The manual-based intervention consisted of cognitive-behavioural therapy (CBT) techniques and was implemented within secondary schools. The treatment group (n = 15) received six sessions of group CBT over a 6-week period, while the control group (n = 11) were placed on a waiting list for 6 weeks and then invited to enter treatment. Children in the CBT group showed statistically significant, but clinically modest improvements following the intervention, with decreases in overall severity of post-traumatic stress symptoms. Significant improvements were also found in overall behavioural difficulties and emotional symptoms. Children in the waiting list control group did not show any improvements over the same period. However, follow-up data, which were only available for a small subset of eight children, suggest that gains in the CBT group were not maintained at 2-month follow-up.