Slightly superior performance of bioimpedance spectroscopy over single frequency regression equations for assessment of total body water

Seoane, F., Abtahi, S., Abtahi, F., Ellegard, L., Johannsson, G., Bosaeus, I. and Ward, L. C. (2015). Slightly superior performance of bioimpedance spectroscopy over single frequency regression equations for assessment of total body water. In: 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Milano, Italy, (3707-3710). 25-29 August 2015. doi:10.1109/EMBC.2015.7319198


Author Seoane, F.
Abtahi, S.
Abtahi, F.
Ellegard, L.
Johannsson, G.
Bosaeus, I.
Ward, L. C.
Title of paper Slightly superior performance of bioimpedance spectroscopy over single frequency regression equations for assessment of total body water
Conference name Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Conference location Milano, Italy
Conference dates 25-29 August 2015
Convener IEEE
Proceedings title 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)   Check publisher's open access policy
Journal name Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS   Check publisher's open access policy
Place of Publication Piscataway, NJ, United States
Publisher Institute of Electrical and Electronics Engineers
Publication Year 2015
Sub-type Fully published paper
DOI 10.1109/EMBC.2015.7319198
Open Access Status Not Open Access
ISBN 9781424492718
ISSN 1557-170X
Volume 2015-November
Start page 3707
End page 3710
Total pages 4
Collection year 2016
Language eng
Abstract/Summary Electrical bioimpedance has been used for several decades to assess body fluid distribution and body composition by using single frequency and bioimpedance spectroscopic (BIS) techniques. It remains uncertain whether BIS methods have better performance compare to single frequency regression equations. In this work the performance of two BIS methods and four different 50 kHz single frequency prediction equations was studied in a data set of wrist-to-ankle tetrapolar BIS measurements (5-1000 kHz) together with reference values of total body water obtained by tritium dilution in 92 patients. Data were compared using regression techniques and Bland-Altman plots. The results of this study showed that all methods produced similarly high correlation and concordance coefficients, indicating good accuracy as a method. Limits of agreement analysis indicated that the population level performance of Sun's prediction equations was very similar to the performance of both BIS methods. However, BIS methods in practice have slightly better predictive performance than the single-frequency equations as judged by higher correlation and the limits of agreement from the Bland-Altman analysis. In any case, the authors believe that an accurate evaluation of performance of the methods cannot be done as long as the evaluation is done using Bland-Altman analysis, the commonly accepted technique for this kind of performance comparisons.
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collections: Official 2016 Collection
School of Chemistry and Molecular Biosciences
 
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