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Table 8 Comparison of changes in percentile position and in POBW for selected changes in birth weight, for a neonate with an estimated optimal birth weight of 3,400 g.

From: Optimal fetal growth for the Caucasian singleton and assessment of appropriateness of fetal growth: an analysis of a total population perinatal database

Percentile positions (percentile points) Change in birth weight (grams) Change in POBW (%)
Range Change Range Change Range Change
50th-45th 5 3400-3357 43 100-98.74 1.3
10th-5th 5 2958-2832 126 87.0-83.3 3.7
5th-1st 4 2832-2681 151 83.3-78.9 4.4