Mean Expected Error in Prediction of Total Body Water: A True Accuracy Comparison between Bioimpedance Spectroscopy and Single Frequency Regression Equations

Table 5

Bland-Altman analysis for comparison of total body water predicted by BIS and 50 kHz impedance methods.

Prediction method	Volume (L)	Bias^1		Correlation		SEE
		Liters; (mean ± SD)	%; (mean ± SD)	Pearson	Lin
Reference method ^2H2O dilution	40.47 ± 9.2
Deurenberg et al. [18]	38.6 ± 7.7	2.3 ± 4.1	4.63 ± 9.7	0.90	0.85	4.65
Heitmann [19]	41.35 ± 6.9	−0.88 ± 4.2	−3.97 ± 11.1	0.90	0.86	4.25
Kushner and Schoeller [20]	43.17 ± 9.0	−2.70 ± 2.4	−7.35 ± 6.9	0.97	0.92	3.62
Sun et al. [21]	42.56 ± 9.7	−2.09 ± 2.6	−5.37 ± 6.3	0.97	0.94	3.28
BIS prediction methods
Moissl et al. [24]	39.9 ± 8.5	0.60 ± 2.4	−0.99 ± 5.7	0.97	0.96	2.48
de Lorenzo et al. [22]	39.6 ± 9.22	0.86 ± 2.5	−2.03 ± 5.9	0.96	0.96	2.59

Compared to reference method.