and environmental contributions of each disorder to the phenotype, bivariate analyses were conducted for pairwise combinations of these disorders, and the RhoE and RhoG, corresponding to the environmental and genetic correlations between the traits were calculated. It should be noted that we are not able to separate shared environment from some types of genetic effects (i.e., additive genetic variance) for single traits (such as TS), and do not attempt to do so in these heritability analyses given the opportunistic nature of this genetic study sample. However, this is not the case for the bivariate analyses, where this approach does allow for the separation of shared genetic and shared environmental factors between two traits.
