An analogous pattern was obtained for adolescent drinking (Model 2a). Whereas the odds that adolescents in single-mother or married stepfamilies drank were about 1.4 and 1.5 times higher, respectively, than the odds for those in two biological married parent families, the odds ratio for adolescents in cohabiting stepfamilies was 2.2. As with smoking, teens in cohabiting stepfamilies were more likely to drink than their peers in married stepfamilies or single-mother families.
