The same 14 084 individuals diagnosed with ADHD were repeatedly partitioned into 22 groups on the basis of ADHD-adjacent traits and the SNP-heritability (bars) of each trait was estimated with GCTA. Full statistical results and sample size for each estimate are available in Supplementary table 2. Significance (red star; p < 0.05/22=0.002) is after Bonferroni correction of one-tailed p-values from z-score tests. Error bars depict standard errors of the estimated observed scale SNP-heritability. Rx, prescription; dx, diagnosis; ADHD, attention-deficit hyperactivity disorder; ASD, autism spectrum disorders; AFF, affective disorders; ANO, anorexia; SCZ/BP, schizophrenia or bipolar disorder; SUD, substance use disorder