Table IV.

Results of FBAT statistics for each candidate polymorphism and the total ADHD and dimensional symptom phenotypes

Polymorphism	Informative families				FBAT-GEE
		Total ADHD		Inattentive		Hyperactive/Impulsive
		P-value	Variance Explained	P-value	Variance Explained	P-value	Variance Explained
DRD4 exon III VNTR
4-repeat	160	.007+	.01	.007+	.01	.003+	.01
7-repeat	122	.05−	.01	.21	.01	.08	.01
DAT1 3’ UTR VNTR
9-repeat	139	.03−	.00	.009 −	.01	.57	.00
10-repeat	141	.02+	.01	.005+	.02	.47	.00
5HTT LPR
Short	110	.23	.00	--	--	--	--
Long	110	.23	.00	--	--	--	--

⁺Indicates allele is positively associated with phenotype

⁻Indicates allele is negatively associated with phenotype.