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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Behav Genet. 2013 Aug 14;43(5):10.1007/s10519-013-9606-x. doi: 10.1007/s10519-013-9606-x

Figure 1.

Figure 1

GCTA estimate of the proportion of variance in the Alcohol Consumption factor accounted for by additive genetic effects as a function of the coefficient of genetic relatedness (GRM) threshold. Error bars demarcate plus/minus two standard errors from the estimates. The solid line gives the sample size upon which the corresponding GCTA estimate is based. When the GRM threshold hits .50, first-degree relative pairs are included in the analysis, and when it hits 1.0, monozygotic twin pairs are also included. The standard GCTA estimate is based on a GRM threshold of .025, which is highlighted in blue in the plot.