The purpose of this study was to obtain demographic, contraceptive, pregnancy, and pregnancy-resolution information on 725 teenage girls aged 18 years or younger who were enrolled in the postnatal follow-up component of the Johns Hopkins Adolescent Pregnancy Program during the years of 1976 to 1982. Since in many cases pregnancy data were obtained retrospectively, the actual years during which deliveries are recorded span the period of 1970 to 1982. Demographic information on the father of the baby was also obtained. Hopkins could accept about 300 of the 600 to 1700 pregnant adolescents each year, and the youngest and most at risk tended to be enrolled. Their average age was 15 years, 3 months and their average school placement, 10th grade. The majority of patients were African American.

Some time after the Teenage Clinic started, a logbook was initiated in an effort follow up on teenagers enrolled in the program. For each registrant, the logbook contained information on the mother's name and medical history number, and the baby's name and medical history number. To this logbook was added information on the mother's delivery, if available; this information was obtained from the Hopkins Department of Obstetrics files.

In 1977, a social worker joined the Teeange Clinic staff and began conducting intake interviews with the program's participants. These interviews generally were conducted at the time of the mother's first postnatal visit or on a subsequent follow-up visit. This first postnatal visit did not necesarily represent the first delivery or pregnancy the mother had had. Consequently, information was collected on the most recent pregnancy, as well as on previous pregnancies, when applicable. This data base contains information for up to the fourth repeat pregnancy.