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Updated: Jul 7, 2026

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Published on: January 7, 2021
A comparison of subjective and mathematical estimations of fetal heart rate variability
Adam J Wolfberg1, David J Derosier, Trevor Roberts
1Tufts-New England Medical Center, Boston, MA, USA. awolfberg@tufts-nemc.org
Objectives:
To develop a computerized algorithm to quantify fetal heart rate (FHR) variability and compare it to perinatologists' interpretation of FHR variability.
Methods:
FHR variability was calculated using data from 30 women who had a fetal scalp electrode placed for a clinical indication, and compared to the assessment of FHR variability from four perinatologists who interpreted paper tracings of the same data. Inter-rater reliability was calculated and receiver-operator curve analysis was done.
Results:
Correlation between the computer algorithm's assessment of variability and the perinatologists' assessment (0.27-0.68) was similar to the inter-rater reliability between perinatologists (0.33-0.72).
Conclusions:
A computer-based algorithm can assess FHR variability as well as expert clinicians.
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