(E) accounted for the remaining 49%. In the univariate alcohol dependence model, A, C, and E could be equated across sexes (Δχ2 (1)= 0.11; p=0.99). Dropping the C pathway did not result in a significant change in model fit (Δχ2 (1)= 0.03; p=0.87), indicating that an AE model provided the best fit for the data. In the final model, just over half (53%) of the variance in AD was attributable to genetic (A) factors, 47% to unique environmental sources of variance.
