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Table 2 Twin intraclass correlations and standardized variance components for body mass index and soda consumption

From: Cross-sectional association between soda consumption and body mass index in a community-based sample of twins

 

BMI (kg/m2)

Soda Consumption

(servings per day)

Twin correlations

Male

Female

Male

Female

MZ

0.71 (0.01)

0.76 (0.01)

0.50 (0.04)

0.56 (0.03)

DZ

0.40 (0.03)

0.41 (0.02)

0.25 (0.02)

0.31 (0.04)

ACE Estimates

a 2

0.63 (0.07)

0.70 (0.04)

0.50 (0.03)

0.50 (0.09)

c 2

0.08 (0.07)

0.06 (0.04)

0.00 (0.00)a

0.06 (0.08)

e 2

0.29 (0.01)

0.24 (0.01)

0.50 (0.03)

0.44 (0.02)

  1. Standard errors are presented within parentheses
  2. BMI body mass index; MZ Monozygotic; DZ Dizygotic; ACE additive genetic, common environment, and unique environment variance components. ACE estimates are standardized biometric variance components obtained from the classical twin model decomposing the variance of BMI or soda consumption into additive genetic (A) variance, common environment (C) variance, and unique environment (E) variance
  3. aThe shared environmental component estimated at negative and was set to zero