Attention Deficit Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder with estimated worldwide prevalence of 7.2 % in children and adolescents. Comorbidity of psychiatric disorders is considered common in ADHD and has been found to contribute to poorer prognosis. Despite decades of research, the actual prevalence of comorbid psychiatric disorders in children and adolescents with ADHD is unclear. The purpose of this systematic review and meta-analysis was to investigate the prevalence…
