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. Author manuscript; available in PMC: 2014 Aug 15.
Published in final edited form as: Psychiatry Res. 2013 Jun 19;208(3):232–237. doi: 10.1016/j.psychres.2013.04.030

Table 3.

Bivariate model parameter estimates and 95% confidence intervals (CI) for full and best fit models for bulimia nervosa and alcohol use disorder.

Bulimia Nervosa Alcohol Use Disorder Correlations
Model No. Model a2 95% CI c2 95% CI e2 95% CI a2 95% CI c2 95% CI e2 95% CI ra 95% CI rc 95% CI re 95% CI
I ACE-ACE ra rc re 0.55 0.20; 0.70 0.00 0.00; 0.30 0.45 0.30; 0.63 0.49 0.17; 0.70 0.12 0.00; 0.41 0.38 0.30; 0.48 0.31 −0.24; 1.00 −1.00 −1.00, 1.00 0.35 0.07; 0.60
IV AE-AE ra re (best fit) 0.55 0.37; 0.70 --- 0.45 0.30; 0.63 0.62 0.54; 0.70 --- 0.38 0.30; 0.46 0.23 0.01; 0.44 --- 0.35 0.08; 0.61

Note. For each model, the first set of parameters (ACE) refers to bulimia nervosa and the second set to alcohol use disorder. Values represent standardized parameters estimates with 95% confidence intervals in parentheses below. ACE = additive genetic, common environment, and unique environmental effects model; AE = additive genetic and unique environmental effects model; CE = common and unique environmental effects model; E = unique environmental effects model; ra = genetic correlation between bulimia nervosa and alcohol use disorder; rc = common environmental correlation between bulimia nervosa and alcohol use disorder; re = unique environmental correlation between bulimia nervosa and alcohol use disorder.