Table 5.
Bivariate Model Fitting
| Bivariate AE model results | |||||
|---|---|---|---|---|---|
| Volume | h2 SV | e2 SV | Rph SV∼ FSIQ | Rg SV∼ FSIQ | Re SV ∼ FSIQ |
| (95% CI) | (95% CI | (95% CI) | (95% CI) | (95% CI) | |
| Thalamus | 0.81 (071‐0.88) | 0.19 (0.12‐0.29) | 0.24 (0.05‐0.41) | 0.27 (0.04‐0.48) | 0.10 (−0.26‐0.44) |
| CBV | 0.88 (0.81‐0.92) | 0.12 (0.08‐0.19) | 0.23 (0.03‐0.42) | 0.25 (0.01‐0.47) | 0.13 (−0.21‐0.43) |
| Thalamus∼ CBV | 0.77 (0.63‐0.84) | 0.23 (0.16‐0.37) | 0.12 (−0.05‐0.29) | 0.14 (−0.08‐0.29) | 0.01 (−0.36‐0.38) |
| CBV ∼ Thalamus | 0.82 (0.73‐0.88) | 0.18 (0.12‐0.27) | 0.18 (0.12‐0.27) | 0.03 (−0.15‐0.27) | 0.07 (−0.31‐0.42) |
Columns one and two show the additive genetic and environmental influences on thalamus volume, cerebral brain volume (CBV), thalamus volume corrected for CBV and CBV corrected for thalamus volume. Column three shows the phenotypic correlation (Rph) of each volume with FSIQ. Columns four and five show the genetic and environmental correlations between the volumes and FSIQ. All values are followed by their 95% confidence intervals (CI).