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Accuracy of weight estimation methods for children

Dale DuBois1, Steven Baldwin, William D King

  • 1Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL 35233, USA. ddubois1@creighton.edu

Pediatric Emergency Care
|April 18, 2007
PubMed

Insights

The Broselow-Luten tape and devised weight estimation method (DWEM) both correlate with measured pediatric weights. However, both methods tend to underestimate patient weight, particularly in heavier children.

Area of Science:

  • Pediatric Emergency Medicine
  • Clinical Assessment
  • Biometrics

Background:

  • Accurate weight estimation is crucial for pediatric emergency care.
  • Existing methods like the Broselow-Luten tape have limitations.
  • Novel methods are needed to improve weight estimation accuracy in children.

Purpose of the Study:

  • To compare the accuracy of the Broselow-Luten tape and the devised weight estimation method (DWEM) against measured weights in children.
  • To evaluate weight estimation accuracy across different pediatric weight classes.

Main Methods:

  • Prospective data collection from 400 children across four weight classes (≤10 kg, 10.1-20 kg, 20.1-36 kg, >36 kg).
  • Weight estimations using the Broselow-Luten tape (height-based) and DWEM (height and body habitus-based).
  • Comparison with measured weights using Pearson correlation and calculation of mean percentage errors.

Main Results:

  • Both Broselow-Luten tape and DWEM showed statistical correlation with measured weights.
  • The Broselow-Luten tape consistently underestimated weight across all classes (negative mean percentage error).
  • The DWEM also underestimated weight in weight classes greater than 20 kg.

Conclusions:

  • Both weight estimation methods demonstrate statistical correlation with actual pediatric weights.
  • The Broselow-Luten tape exhibits underestimation across all weight categories.
  • The DWEM shows underestimation in children weighing over 20 kg, indicating potential inaccuracies in higher weight classes.
Abstract

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