Longitudinal study on head circumference of Pakistani infants in different socioeconomic groups.

Head circumference of Pakistani infants from different socioeconomic groups, was measured during the entire period of infancy. Growth curves for head circumference of local infants remained below the 25th percentile of the Harvard standard through out the first year. However, divergence from the standard increased as their age advanced. Head circumference was found to vary directly with socioeconomic status. It was concluded that smaller head circumference of the local infants was part of the overall growth depression caused by inadequate supplementary feeding and late introduction of solids to the infants' diet.