Genetic correlation estimates for attention-deficit/hyperactivity disorder in male and female individuals obtained from genomic relatedness matrix restricted maximum likelihood (GREML) and linkage disequilibrium score regression (LDSC) for the Lundbeck Foundation Initiative for Integrative Psychiatric Research (iPSYCH), Psychiatric Genomics Consortium (PGC), and combined PGC + iPSYCH datasets. Because of strict restrictions on raw individual genotype access and transfer, GREML analyses could only be performed separately in the PGC and iPSYCH samples. Bars display standard errors. The horizontal dashed line indicates a genetic correlation of 1. The estimator was left unconstrained for these analyses to allow for an unbiased assessment of the standard errors of the estimates; as such, some of the estimates exceed 1.
