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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2010 May 20;49(7):675–685. doi: 10.1016/j.jaac.2010.03.015

Table 1.

Phenotypic characteristics of the International Multi site ADHD Genetics (IMAGE) project sample

Mean (sd)
probands (n=1143) siblings (n=1453)
Age in years 10.9 (2.8) 10.9 (3.4)
IQ 100.6 (15.8) 102.1 (14.1)
Gender (% female) 13.2 48.4
SCQ scores
 SCQ total 8.6 (6.2) 4.5 (4.2)
 social 2.8 (2.8) 1.3 (1.9)
 communication 3.4 (2.4) 2.3 (2.0)
 restricted & repetitive 1.8 (1.9) 0.7 (1.3)
Conners scores
 inattentive 19.4 (5.1) 7.6 (7.4)
 hyperactive impulsive 17.7 (5.6) 5.8 (6.4)

Note. SCQ=Social Communication Questionnaire

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