Association Among Systemic Immune-Inflammation Index, Vitamin D Status and Clinical Subtypes of ADHD: A Retrospective Investigation
Background: Attention-deficit/hyperactivity disorder (ADHD) has been linked to immune dysregulation and nutritional imbalance. The systemic immune-inflammation index (SII) is a composite inflammatory marker, while serum 25-hydroxyvitamin D (25(OH)D) reflects vitamin D status. Their joint association with paediatric ADH...