Table 3.
Estimates of variance components in the HTK cohort. MZ and DZ twins were separated out and used to estimate correlations of MZ and DZ twins. ρ c indicates a lower bound for the proportion of variance explained by the environmental effects shared by family members.
| cor (MZ)a | cor (DZ)b | ρ c (95% confidence interval) | |
|---|---|---|---|
| Height | 0.970 | 0.832 | 0.694 (0.690, 0.698) |
| BMI | 0.729 | 0.232 | 0.266 (0.061, 0.496) |
| logTG | 0.551 | 0.336 | 0.121 (0.070, 0.172) |
| TCHL | 0.624 | 0.382 | 0.139 (0.093, 0.185) |
| HDL | 0.677 | 0.476 | 0.275 (0.240, 0.310) |
| LDL | 0.656 | 0.342 | 0.028 (−0.022, 0.078) |
| SBP | 0.601 | 0.453 | 0.306 (0.268, 0.344) |
| DBP | 0.646 | 0.585 | 0.524 (0.501, 0.547) |
aCorrelation of MZ twins. bCorrelation of DZ twins.