Post-traumatic stress disorder in youth exposed to the Syrian conflict: A systematic review and meta-analysis of prevalence and determinants.

A decade of ongoing armed conflict in Syria has damaged the physical and mental health of millions of adults and children. This study aimed to systematically review the prevalence of post-traumatic stress disorder among youth exposed to the Syrian conflict, and understand its individual and contextual determinants. The screening procedure resulted in 26 studies, with a total of 11,400 Syrian children and adolescents. The prevalence was 36% (95% CI (0.29-0.43), < 0.001). Loss of family members or acquaintances, witnessing violence, and social withdrawal increased the risk of post-traumatic stress disorder, while social trust and social support were protective factors.