. Author manuscript; available in PMC: 2015 Apr 1.

Published in final edited form as: Alcohol Clin Exp Res. 2014 Jan 24;38(4):938–947. doi: 10.1111/acer.12352

Table 5.

Estimates of Explained Phenotypic Variance (h²_SNP) Attributable to GABA System SNPs and All Available SNPs, Separately for Autosomal and Chromosome X Markers

	Drinking Index		Alcohol Abuse and Dependence Symptoms

	h²_SNP	(SE)	h²_SNP	(SE)
All Autosomal SNPs	0.156^*	(.100)	0.09	(.100)
GABA Autosomal SNPs	0	(.006)	0	(.006)
All Chr. X SNPs	0	(.016)	0.001	(.016)
GABA Chr. X SNPs	0	(.001)	0	(.001)

Likelihood ratio test p < .05

Analyzed N = 3614 for the drinking index and analyzed N = 3621 for alcohol abuse and dependence symptoms