Table 2.
Cross-trait polychoric correlations of smoking during pregnancy with co-occurring risk factors, using within- and cross-sister.
| Criminal Conviction | Psychiatric Hospitalization | Other Maternal Risk Factors | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SDP | Violent | Drug | Driving | Other | Any | Drug | Alcohol | Any | Teen Pregnancy | No Cohabitation | Low Education | |
| Correlation Type | ||||||||||||
| Within-Sister | * | 0.36 | 0.43 | 0.38 | 0.19 | 0.30 | 0.37 | 0.38 | 0.39 | 0.26 | 0.32 | 0.37 |
| Full Sisters | 0.45 | 0.23 | 0.25 | 0.23 | 0.12 | 0.18 | 0.21 | 0.22 | 0.22 | 0.16 | 0.17 | 0.26 |
| Half Sisters | 0.24 | 0.11 | 0.13 | 0.09 | 0.08 | 0.11 | 0.08 | 0.12 | 0.11 | 0.06 | 0.06 | 0.13 |
NOTE: All correlations were conducted with the three-category SDP measure.