No consistent differences have been found in recent studies of the association between disruptive behavior disorders and socioeconomic status.14-15,63 However, Asian children in the UK had lower rates of ODD than non-Asian youth.59 Age of onset, of disruptive behavior disorders appears to be an important predictor of outcome, with earlier onset associated with more aggressive behaviors,64 and boys who have a diagnosis of ADHD being more likely to have an early onset of CD.63
