There was also a positive effect on immunization rates. The rate of substance use (alcohol, tobacco, and marijuana) increased from pregnancy through the 1st postpartum year among both groups but was lower among the mothers who participated in the intervention
Stevens-Simon, Nelligan, and Kelly (2001) conducted a study to determine if adding an intensive home visitation component to a comprehensive adolescent-focused maternity program would prevent child abuse and neglect, which some investigators have found occurs at a higher frequency among adolescent mothers.