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Table 3 Unstandardized parameter estimates estimating body mass index from soda consumption among same sex twins

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

 

Model 1

Model 2

Model 3a

Phenotypic model

Quasi-causal model

Quasi-causal model

Male

Female

Male

Female

Male

Female

b A

  

0.80 (0.31)

2.18 (0.27)

0.82 (0.24)

2.13 (0.23)

b P

0.70 (0.10)

1.53 (0.10)

0.22 (0.14)

0.16 (0.13)

0.20 (0.10)

0.20 (0.10)

Goodness of fit

RMSEA [90% CI]

0.03 [0.02, 0.04]

0.02 [0.01, 0.03]

0.02 [0.01, 0.03]

 CFI

0.988

0.996

0.996

 TLI

0.990

0.996

0.996

  1. Standard errors are presented within parentheses. The phenotypic model does not include controls for between-pair confounds, whereas quasi-causal models include controls for between-pair confounds. Bolded parameter estimates are statistically significant at p < 0.05
  2. b A amount of variance in body mass index attributable to additive genetic influences; b P phenotypic association between predictor and outcome; RMSEA root mean square error of approximation; CFI comparative fit index; TLI Tucker-Lewis index
  3. a b P is constrained to be equal for males and females