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A GWA Meta-Analysis of Continuous Measures of ADHD Symptoms in Nine Population-Based Pediatric Cohorts

Figure 2. QQ-plot of all meta-analysis results based on at least 10,000 individuals. Background Common SNPs explain a substantial part of the liability to ADHD. Recently we also found that polygenic scores based on a meta-analysis of ADHD clinical diagnosis predict continuous measures of ADHD symptoms in the general population. Next, we performed a genomewide association (GWA) meta-analysis in populationbased cohorts of ADHD symptoms.