Table 4

Comparison of Estimated Fetal Weight by Ultrasound and Measured Birth Weight

Last ultrasound measurement (N = 61)a

Measurement at birth (N = 61)a

p-valueb


Weight (grams) median ( IQRc)

1956 (1607-2273)

2300 (2050-2660)

<0.001

Weight percentile median (IQR)

27 (8-38)

28 (10-42)

0.221

Gestational age (weeks) Median (IQR)

34 (33-36)

36 (34-37)

<0.001


a There were 61 women who had an ultrasound exam at ≤ 3 weeks before delivery

b P-value determined by signed-rank test. The data were skewed and therefore non-parametric tests were used for this small data set.

c Interquartile range.

Payne et al. BMC Pediatrics 2011 11:90   doi:10.1186/1471-2431-11-90

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