Table 1.
Demographics of the study sample (n = 652).
Figure 1.
Distribution of total brain volume (TBV) and adult self-reported ADHD symptoms in a healthy sample (n = 652).
(a) TBV is associated with the total number of self-reported ADHD symptoms. Of the two ADHD symptom domains, mainly the attentive domain contributes to TBV: (b) inattentive symptoms (β = −.09, pnominal = .007, pempirical = .013), and (c) hyperactive/impulsive symptoms (β = −.06, pnominal = .064, pemperical = .123). (d) Total brain volume across groups based on the number of self-reported ADHD symptoms. The group with 3 or less self-reported symptoms differed from the intermediate group and from the group with a number of ADHD symptoms corresponding to the ADHD diagnosis (≥6 in either of the two domains). *Total brain volume was adjusted for age, gender and field strength.