Participant characteristics for the correlation analysis (section 2) are summarized in Table 1.B. Children with and without ADHD were included in this section. Age and estimated IQ were again significantly different between control and ADHD groups, and proportion of male and female participants was different between groups. ln(k) was not different when comparing controls and children with ADHD, but when adjusting for age, the difference was statistically significant (p value = 0.015). To examine the effect of age, gender and IQ on the correlations, we performed additional analysis using these variables as covariates; results are discussed in Section 2 below. In this section analysis, the correlations between functional connectivity and delay-discounting were adjusted for the effects of age and gender.
