TABLE 5.
Bivariate Cholesky decompositions for two bivariate models, including sibling conflict at 5 years with concurrent nighttime sleep duration and total sleep problems
| Scales | Model | A11 | C11 | E11 | |||
|---|---|---|---|---|---|---|---|
| Sibling conflict andnighttime sleep duration | ACE-ACE | 0.22 (0.07–0.50) |
0.58 (0.36–0.83) |
0.20 (0.12–0.28) |
|||
|
A21 0.00 (0.00–0.00) |
C21** 0.06 (0.01–0.20) |
E21 0.001 (0.00–0.01) |
A22 0.38 (0.27–0.52) |
C22 0.51 (0.32–0.74) |
E22 0.04 (0.03–0.06) |
||
| A11 | C11 | E11 | |||||
| ACE-ACE* |
0.22 (0.05–0.50) |
0.58 (0.37–0.85) |
0.20 (0.13–0.29) |
||||
|
A21 0.00 (0.00–0.00) |
C21** 0.07 (0.01–0.19) |
E21 0.00 (0.00–0.00) |
A22 0.38 (0.27–0.51) |
C22 0.51 (0.33–0.74) |
E22 0.04 (0.03–0.06) |
||
| A11 | C11 | E11 | |||||
| Sibling conflict andtotal sleep problems | ACE-ACE | 0.09 (0.04–0.16) |
0.86 (0.68–1.06) |
0.05 (0.03–0.07) |
|||
|
ACE-ACE* |
A21 0.00 (0.00–0.00) A11 0.09 (0.04–0.16) |
C21** 0.07 (0.01–0.15) C11 0.86 (0.68–1.06) |
E21 0.001 (0.00–0.02) E11 0.05 (0.03–0.07) |
A22 0.30 (0.20–0.44) |
C22 0.55 (0.38–0.76) |
E22 0.07 (0.05–0.11) |
|
|
A21 0.00 (0.00–0.00) |
C21** 0.07 (0.01–0.15) |
E21 0.00 (0.00–0.02) |
A22 0.30 (0.20–0.44) |
C22 0.55 (0.38–0.76) |
E22 0.07 (0.05–0.11) |
Note. A11 = additive genetic components for first phenotype, C11 = shared environment component for first phenotype, E11 = nonshared environment component for first phenotype. A21 = additive genetic component shared between first and second phenotypes, C21 = shared environment component shared between first and second phenotypes, E21 = nonshared environment component shared between first and second phenotypes. A22 = additive genetic components for second phenotype, C22 = shared environment component for second phenotype, E22 = nonshared environment component for second phenotype. Bolded models denote the best fitting models. Variance-based confidence intervals (CIs) are presented in parentheses and are based on standardized path estimates.
A21 and E21 paths were dropped in models.
CIs for C21 paths in the full and reduced models correspond with the percent of the variance in the second phenotype (7% for sleep duration and 7% for total sleep problems) accounted for by the first phenotype (sibling conflict).