Comparison of the CNV sets identified in the 335 probands and the healthy controls showed comparable overall frequencies. ADHD patients had a mean of 27.4 CNVs vs 26.9 for healthy controls (P=0.28). No significant differences were seen for deletions (P=0.67) or duplications (P=0.33). Moreover, no difference was seen in CNV size between the patient and control groups, either overall (P=0.91), or for duplications (P=0.43) or deletions (P=0.12).
