Bari district birthweight study: comparison with the Bristol perinatal growth chart.

We studied the neonatal weight distribution of 15,298 newborns from the Bari District at various gestational ages by the 10th, 50th, and 90th percentiles. After analysis, we constructed a growth chart following the method of Dunn. By comparing our results with those of Dunn's Bristol Perinatal Growth Chart, we found a weight difference of +4.5% in our population. This difference may be related to ethnic as well as socioeconomic factors.