Intrauterine Growth as Estimated From Liveborn Birth-Weight Data at 24 to 42 Weeks of Gestation

Percentile curves representing intrauterine growth of Caucasian infants in Colorado are constructed from the birthweights of liveborn infants at gestational ages ranging from 24 to 42 weeks. The median weights of Colorado babies were found to be lower at 40 weeks of gestation than the national median, and mean weights at 40 and 42 weeks were lower than those given by other authors. The use of the intrauterine growth chart in studying the nutrition of babies at birth and during their postnatal growth period has been described.