This study attempted to determine variables significant in predicting use of and changes in use of prenatal care; infant mortality; and the relationship between prenatal care and infant birth weight. The data were collected from birth and death certificates at the Public Health Department in Dallas, Texas. Data were tested using analysis of variance, Scheffe' test, and Chi-square. A mother's age, race, income level, marital status, and parity were found to be significant factors in use of prenatal care, and use of care was found to have begun earlier in recent years. Likewise, birth weight was found to be related to the trimester prenatal care began. Conclusions concerning infant mortality could not be drawn due to insufficient data.