This study involves a comparison of two groups each consisting of 422 primigravid mothers and their infants. The purpose of the research was to determine if adolescent women under the age of 16 had lower birthweight infants than women aged 20 to 24.

The study found no basic differences in infant birthweight based upon the age of the mother. However, it did find infant birthweight differences related to other demographic factors. Those women who were white and those who had more economic buying power had infants with higher birthweights. Gestational age, pregnancy weight, weight change during pregnancy, and number of antepartum clinic visits were also associated with higher birth weight infants.