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. Author manuscript; available in PMC: 2021 May 20.
Published in final edited form as: Psychol Med. 2018 Sep 17;49(11):1841–1849. doi: 10.1017/S0033291718002532

Table 5.

Estimated variance explained by genetic and environmental factors from bivariate ACE model

Estimated Variance (95% CI)
Additive genetic (A) Shared environmental (C) Non-shared environmental (E)



Disorder Unique Shared Unique Shared Unique Shared
ADHD 0.70 (0.60 - 0.80) 0.07 (0.01 - 0.13) 0.04 (0.00 - 0.08) 0.00 (−0.01 - 0.01) 0.19 (0.15 - 0.23) 0.00 (0.00 - 0.00)
Obesity 0.43 (0.30 - 0.55) 0.04 (0.01 - 0.08) 0.11 (0.05 - 0.17) 0.00 (−0.02 - 0.03) 0.42 (0.35 - 0.49) 0.00 (0.00 - 0.00)
Genetic correlation (rg) Shared environmental correlation (rc) Non-shared environmental correlation (re)
ADHD and Obesity 0.30 (0.17 - 0.44) 0.19 (−0.37 - 0.75) −0.03 (−0.19 - 0.13)

Proportion of phenotypic correlation explained by shared genetic influence: 0.98 (0.55 - 1.00)

r: correlation; CI: confidence interval