. Author manuscript; available in PMC: 2010 Mar 3.

Published in final edited form as: Am J Med Genet B Neuropsychiatr Genet. 2008 Dec 5;147B(8):1337–1344. doi: 10.1002/ajmg.b.30866

Table 3.

Descriptive Statistics on offspring in 909 trios used in the GWAS

Sub-type	Counts	Country of Origin	Families
Hyperactive-Impulsive	33	Belgium	36
Inattentive	13	Germany	99
Combined	845	Holland	303
Sub-threshold	18	Ireland	84

	Age at onset (s.d.)	Israel	166

Hyperactive-impulsive (Hyp/Imp)	2.77 (1.85)	Spain	67
Inattention (Ina)	4.31 (1.96)	Switzerland	25
Average count of Ina symptoms	7.98 (1.37)	United Kingdom	129

Average count of Hyp/Imp symptoms	8.11 (1.10)	Male	790
Average total number of symptoms	16.10 (1.92)	Female	119

Included in this table is a breakdown of the different diagnoses for the TDT probands based on the IMAGE data. Additionally, average number of symptoms, the age of onset, and breakdown of the country of origin for the different families has been included for the 909 complete trios.