Tol, W. A., Komproe, I. H., Susanty, D., Jordans, M. J., Macy, R. D., & De Jong, J. T. (2008). School-based mental health intervention for children affected by political violence in Indonesia: a cluster randomized trial. Jama, 300(6), 655-662. https://doi.org/10.1001/jama.300.6.655

Michigan State University

In Indonesia: CBI reduced post-traumatic stress disorder (PTSD) symptoms and helped maintain hope, but did not reduce traumatic-stress related symptoms, depressive symptoms, anxiety symptoms, or functional impairment.
In Nepal: CBI did not lead to a reduction in psychiatric symptoms. Rather, it had moderate short-term beneficial effects, such as reduced psychological difficulties and aggression among boys, increased prosocial behavior among girls, and increased hope among older children. 
Similalrly, in Sri Lanka: no main effects were observed on PTSD, depressive, and anxiety symptoms.

Effectiveness of Classroom-Based Intervention (CBI) for war-affected children in Indonesia, Nepal, and Sri Lanka (cluster randomized trials)

Tol, W. A., Komproe, I. H., Jordans, M. J., Vallipuram, A., Sipsma, H., Sivayokan, S., ... & De Jong, J. T. (2012). Outcomes and moderators of a preventive schoolbased mental health intervention for children affected by war in Sri Lanka: a cluster randomized trial. World Psychiatry, 11(2), 114-122. https://doi.org/10.1016/j.wpsyc.2012.05.008

Outcomes and moderators of a preventive schoolbased mental health intervention for children affected by war in Sri Lanka: a cluster randomized trial

Jordans, M. J., Komproe, I. H., Tol, W. A., Kohrt, B. A., Luitel, N. P., Macy, R. D., & De Jong, J. T. (2010). Evaluation of a classroom‐based psychosocial intervention in conflict‐affected Nepal: A cluster randomized controlled trial. Journal of Child Psychology and Psychiatry, 51(7), 818-826. https://doi.org/10.1111/j.1469-7610.2010.02209.x

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