Results of multivariate logistic regressions for the PSA are shown in Tables S2 and S3 for AA and EA families, respectively. Within-quintile comparisons of AA family background characteristics are presented in Table 3. Among AA families, prevalence of parental separation ranged from 39% (0–20%ile of propensity score distribution) to 100% (>80%ile). In the highest quintile of predicted probability of separation (>80%ile), there were no AA intact families; however, it is in this quintile that paternal and maternal alcoholism are over-represented, as are mothers who gave birth as teens. Given poor matching of AA families, within-quintile comparisons of offspring early sexual onset by parental separation were not conducted.
