Table 6

Bivariate longitudinal analysis: standardized variance and covariance estimates of best-fitting models1,2 for selected eating behaviors
Variable Model Estimate a2 c2 e2
Does not eat enough AE (drop e21) Var2.5y 0.91 (0.79, 0.97) - 0.09 (0.03, 0.21)
Var9y 0.62 (0.35, 0.82) - 0.38 (0.18, 0.65)
Cov2.5-9y 1.00 (1.00, 1.00) - -
Eats too much AE (drop e21) Var2.5y 0.87 (0.71, 0.95) - 0.13 (0.05, 0.29)
Var9y 0.52 (0.25, 0.74) - 0.48 (0.26, 0.75)
Cov2.5-9y 1.00 (1.00, 1.00) - -
Eats too fast AE (drop e21, sex2.5) Var2.5y 0.71 (0.48, 0.87) - 0.29 (0.13, 0.52)
Var9y 0.38 (0.14, 0.60) - 0.62 (0.40, 0.86)
Cov2.5-9y 1.00 (1.00, 1.00) - -
Eats between meals ACE (drop c21, e21) Var2.5y 0.26 (0.06, 0.52) 0.69 (0.44, 0.86) 0.04 (0.01, 0.12)
Var9y 0.72 (0.22, 0.91) 0.09 (0.00, 0.49) 0.20 (0.09, 0.37)
Cov2.5-9y 1.00 (1.00, 1.00) - -
Eats a different meal CE (drop e21) Var2.5y - 1.00 (0.99, 1.00) 0.00 (0.00, 0.01)
Var9y - 0.68 (0.56, 0.80) 0.32 (0.20, 0.46)
Cov2.5-9y - 1.00 (1.00, 1.00) -

1Based on lowest AIC and nonsignificant likelihood ratio chi-square test of model against comparison model (P > 0.05) — See Additional files 5 and 6. 95% CIs in parentheses.

2All models refer to basic models (without adjustment for age or sex) except for Eats too fast trait for which a bivariate ACE model adjusted for children’s sex provided a better fit (lowest BIC).

c21, path coefficient of shared environmental influences present at age 2.5 on behavior trait at age 9; e21, path coefficient of unique environmental influences present at age 2.5 on behavior trait at age 9; sex2.5y, effect of sex at age 2.5; Var2.5y, proportion of variance explained by additive genetic influences (a2), shared environmental influences (c2) and unique environmental influences (e2) at age 2.5; Var9y, proportion of variance explained by a2, c2 and e2 at age 9; Cov2.5-9y, proportion of covariance explained by a2, c2 and e2 between 2.5 and 9 years.

Dubois et al.

Dubois et al. International Journal of Behavioral Nutrition and Physical Activity 2013 10:134   doi:10.1186/1479-5868-10-134

Open Data