TNF and attention deficit-hyperactivity disorder: For example, the ratio of proinflammatory TNF-α to antiinflammatory IL-13 (but not IL-10) showed a trend for low ADHD values (ADHD 0.27, sd 0.10; CON 0.35, sd 0.12) to increase on medication (ADHDmed 0.31, sd 0.06: F(2,29) = 3.1, p = 0.06, η2 = 0.18, covariates age and gender).