Table 1

Subject descriptive characteristics and the validation of BIS for predicting total body water compared to deuterium oxide (n = 28, 14 men, 14 women)











Agreement (L)












Weight (kg) Math± SD
 Height (cm) Math± SD
 Method
 Math± SD (L)
 Slope
 Intercept
 r
 r2
 SEE (L)
 TE (L)
 CE/Bias
 Upper Limits
 Lower Limits
 Trend
All Subjects
 72.8 ± 17.58
 174.6 ± 8.7
 4000B
 38.28 ± 10.71
 0.897
 6.19*
 0.96
 0.92
 2.99
 3.81
 2.26*
 8.39
 -3.88
 -0.70



SFB7
 40.63 ± 10.69
 0.920
 3.18
 0.98
 0.96
 2.12
 2.21
 -0.09
 4.31
 -4.50
 -1.32



D2O
 40.54 ± 10.05









Men
 87.10 ± 12.52
 181.2 ± 6.4
 4000B
 47.51 ± 6.43
 0.767
 12.59
 0.81
 0.66
 3.75
 4.05
 1.50
 9.15
 -6.15
 -0.13



SFB7
 49.81 ± 6.29
 0.879
 5.22
 0.91
 0.83
 2.70
 2.73
 -0.80
 4.49
 -6.11
 -0.15



D2O
 49.01 ± 6.11









Women
 58.49 ± 6.67
 168.1 ± 4.9
 4000B
 29.05 ± 3.68
 1.014
 2.62
 0.88
 0.77
 2.05
 3.56
 3.01*
 6.87
 -0.85
 0.55



SFB7
 31.44 ± 4.00
 0.991
 0.92
 0.94
 0.88
 1.50
 1.52
 0.62
 3.45
 -2.20
 0.43



D2O
 32.06 ± 3.68









* Represents significance at (p ≤ 0.025), SFB7 = Imp™ SFB7, 4000B = XiTRON 4000B, CE/Bias = constant (mean) error,TE = total error, SEE = standard error of estimate, r = Pearson product-moment correlation coefficient, Limits = 95% limits of agreement (CE ± 1.96 SD of residual scores (predicted – actual)), Trend = relationship between the difference of D2O and BIS method (SFB7, 4000B) and the mean of both methods.

Moon et al. Nutrition & Metabolism 2008 5:7   doi:10.1186/1743-7075-5-7