IFNG and attention deficit-hyperactivity disorder: In contrast, the low levels of the proinflammatory IFN-γ to antiinflammatory IL-13 ratio (but not IL-10) in the ADHDmed versus the ADHD group (CON 0.69, sd 0.21; ADHD 0.60 sd 0.19; ADHDmed 0.36, sd 0.11: F(1,21) = 11.76, p = 0.003) were attenuated with the same covariates (F(1,19) = 3.70, p = 0.07, η2 = 0.16), suggesting a partial contribution of the age and gender differences.