At follow-up, participants and their parent(s) were interviewed using the Kiddie Schedule for Affective Disorders and Schizophrenia, Present and Lifetime (KSADS-PL) to evaluate ADHD and other Axis-I psychiatric disorders (Kaufman, Birmaher, Brent, Rao, Flynn, Moreci, Williamson & Ryan, 1997). The Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) (Wechsler, 1997) was administered to all participants. Table 1 provides descriptive characteristics of the sample at baseline and follow-up.
