The weighted means of all the variables are presented in Table 1. The proportion of adolescents that smoked, drank, or both smoke and drank was lowest in married two biological parent families and highest in cohabiting stepfamilies. Whereas 24% of adolescents in two biological married parent families smoked, 27% in single-mother families, 31% in married stepfamilies, and 39% in cohabiting stepfamilies smoked. Similarly, 43% of adolescents in two biological married parent families consumed alcohol, versus 47% in single-mother families, 52% in married stepfamilies, and 58% in cohabiting stepfamilies. A larger share of adolescents in cohabiting stepfamilies (33%) both smoked and drank than adolescents in other family structures.
