Ultrasound fetal weight estimation: precision or guess work?

Aust N Z J Obstet Gynaecol. 1993 May;33(2):142-4. doi: 10.1111/j.1479-828x.1993.tb02378.x.


We compared the prediction of birth-weight based on factors shown by epidemiological studies to influence it with the performance of 2 clinical examples of ultrasonic fetal weight estimation reported in the literature. The standardized absolute error of the 2 examples of ultrasonic fetal weight estimation was similar to estimation by multiple regression of birth-weight on maternal age, parity, height and weight in 11,516 Chinese mothers. This severely limits the clinical utility of the estimation derived from these ultrasonic measurements.

MeSH terms

  • Birth Weight*
  • Confidence Intervals
  • Female
  • Fetus / physiology*
  • Humans
  • Models, Statistical
  • Predictive Value of Tests
  • Pregnancy
  • Ultrasonography, Prenatal*