Table 3.

Transmission disequilibrium test analyses of ADHD in the ADHD sample

Gene	Location*	Marker	Allele	Allele frequency	Transmissions†	Non-transmissions	χ2	P value
KCNJ5	Intron 1	rs11221503	C	0.813	60	69	0.628	0.428
			T	0.187	69	60
	Intron 1	rs2604212	C	0.546	96	100	0.082	0.775
			G	0.454	100	96
	Exon 2 (syn)	rs7118824	G	0.812	72	51	3.603	0.058
			T	0.188	51	72
	Exon 2 (nonsyn)	rs7102584	G	0.018	5	9	1.159	0.282
			C	0.982	9	5
	Intron 2	rs11221512	A	0.095	24	38	3.189	0.074
			G	0.905	38	24
	3′	rs2604201	A	0.275	67	97	5.519	0.019
			G	0.725	97	67

^*Based on NCBI Build 36.1, the March 2006 UCSC human reference sequence.

^†Number of times the alleles were transmitted from heterozygous parents to affected offspring in this sample.

P-values shown are not corrected for multiple testing. Experiment-wide significance threshold required to keep Type I error rate at 5%: 0.009.