Table 3.
Cross-twin–within-time and cross-twin–cross-time correlations as estimated in the saturated model (with and without sex differences)
| Cross-twin–within-time | Cross-twin–cross-time | |||||
|---|---|---|---|---|---|---|
| 12–18 | 19–27 | 28–59 | 12–18 to 19–27 | 12–18 to 28–59 | 19–27 to 28–59 | |
| MZM | .29 | .35 | .24 | .20 | .28 | .29 |
| DZM | .17 | .11 | .16 | .11 | .12 | .04 |
| MZF | .39 | .43 | .31 | .28 | .14 | .26 |
| DZF | .30 | .21 | .07 | .23 | .07 | .12 |
| DOS (mf/fm) | .24 | .15 | .08 | .10/.17 | .12/.01 | .08/.17 |
| MZ | .34 | .40 | .30 | .24 | .17 | .27 |
| DZ | .27 | .19 | .10 | .19 | .10 | .10 |
MZM, male monozygotic twin pairs; DZM, male dizygotic twin/sibling pairs: MZF, female monozygotic twin pairs; DZF, female dizygotic twin/sibling pairs; DOS, opposite sex dizygotic twin/sibling pairs; MZ, all monozygotic twin pairs; DZ, all dizygotic twin/sibling pairs; mf, male–female correlation; fm, female–male correlation