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Limitations of Weight Velocity Analysis by Commercial Computer Program Growth Analyser Viewer Edition.
Martin J C van Gemert1, Cornelis M A Bruijninckx2, Ton G van Leeuwen3
1Department of Biomedical Engineering & Physics, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. m.j.vangemert@amc.uva.nl.
Annals of Biomedical Engineering
|August 29, 2018
Summary
The Growth Analyser Viewer Edition (GAVE) software may produce inaccurate weight velocity predictions due to its 448-day calculation window, potentially leading to misdiagnoses in pediatric growth monitoring. Validation and revised methods are needed before its use in young children.
Area of Science:
- Pediatric Endocrinology
- Medical Software Validation
- Child Growth and Development
Background:
- Commercial software "Growth Analyser Viewer Edition" (GAVE) is widely used for monitoring child growth.
- No published studies validate GAVE's methodology or accuracy.
- GAVE calculates weight velocity using a 448-day interval.
Purpose of the Study:
- To analyze GAVE's weight velocity calculation method.
- To identify potential sources of error in GAVE's predictions.
- To prevent misdiagnoses stemming from inaccurate growth data.
Main Methods:
- Schematic analysis of clinical weight curves.
- Evaluation of GAVE's weight velocity prediction algorithm.
- Case review of a misdiagnosis involving GAVE.
Main Results:
- GAVE's 448-day calculation window can lead to erroneous weight velocity predictions.
- These inaccuracies may contribute to misdiagnoses, such as child abuse.
- The software's method is particularly problematic for infants and during periods of significant weight change.
Conclusions:
- The 448-day interval in GAVE is a significant flaw causing inaccurate growth velocity predictions.
- GAVE should not be used in infants under 1.5 years or in specific clinical scenarios until revised.
- Medical software lacking public validation and transparent methodology should be critically evaluated or discarded.
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