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Ultrasonic fetal weight estimation: Analysis of inter- and intra-observer variability

✍ Scribed by T. C. Chang; Stephen C. Robson; John A. D. Spencer; Stephen Gallivan

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 399 KB
Volume: 21
Category: Article
ISSN: 0091-2751
DOI: 10.1002/jcu.1870210808

No coin nor oath required. For personal study only.

✦ Synopsis

Standard ultrasound measurements were performed by two observers in 40 third-trimester fetuses. Observers were blinded to the results of the meaurements. Estimated fetal weight (EFW) was calculated using two published formulae. The intra-observer standard deviation for EFW, assessed using one-way analysis of variance, was <75 g for both observers. The 95% prediction intervals for inter-observer comparisons of EFW, calculated using the limits of agreement method, were -187.3 g to 139.8 g, and -159.9 g to 124.3 g, using the two formulae. The results suggest that measurements of EFW are reproducible. The prediction interval is comparable to the weekly fetal weight increment in normal fetuses.

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