Early intervention improves long-term outcomes in children with Attention-Deficit/Hyperactivity Disorder (ADHD). However, disparities may exist in the timing of treatment initiation following diagnosis. The objective of this systematic review was to examine associations between sociodemographic factors and time to treatment initiation after ADHD diagnosis in children and adolescents. We searched MEDLINE, EMBASE, PsycINFO, and CINAHL from inception to October 8, 2025. We included quantitative…
