With respect to ADHD, the ROC analysis revealed that all significantly changed parameters between ADHD and the control group (i.e., PDW, IL-1β, IL-6, TNF-α, the M1 profile, proinflammatory profile, and proinflammatory/anti-inflammatory ratio) indicated good prediction abilities for ADHD (i.e., AUC was greater than 0.7). The gene discussed is IL6; the disease is attention deficit-hyperactivity disorder.