Three other randomised trials12, 13 and 14 have assessed the usefulness of home-visiting programmes. Two trials12 and 13 involved disadvantaged women but, although just under half were adolescents, most were aged 18 or 19 years; teenage mothers at greatest risk of child abuse, neglect, and subsequent repeated teenage pregnancy, are those younger than age 18 years.2 In the trials, the combination of seven to nine prenatal and 23–26 postnatal home visits up to age 2 years reduced the frequency of pregnancy-induced hypertension, childhood injuries, hospital admissions, and second pregnancies. However, none of the subgroups in either trial12 and 13 received postnatal home visits as the only intervention. The third trial,14 from which women younger than age 17 years were specifically excluded, involved postnatal home visits with paraprofessionals as a sole intervention; no significant differences in outcomes between those who were and were not visited were noted.14