Determination of Accuracy of Fetal Weight Using Ultrasound and Clinical Fetal Weight Estimations in Calabar South, South Nigeria

Table 4

The errors and correlation of ultrasound and clinical fetal weight estimation with the actual birth weights of the babies.

Parameter	Clinical ± std.	Ultrasound ± std.	value
Mean error (gram)	299 ± 338 g	−101 ± 189 g	0.0000
Mean absolute error (gram)	362 ± 307 g	293 ± 313 g	0.205
Mean percentage error	9.2% ± 10.44	−3.1% ± 9.67	0.0000
Mean absolute % error	11.16% ± 9.48	9.04% ± 7.61	0.205
Correlation coefficient	0.740	0.847	0.002
Accuracy within 10% of ABW	69.5%	72%	0.755