Research Article

Evaluation of Body Composition in Hemodialysis Thai Patients: Comparison between Two Models of Bioelectrical Impedance Analyzer and Dual-Energy X-Ray Absorptiometry

Table 3

Mean differences and limits of agreement for fat mass, percentage of fat mass, fat-free mass, fat mass index, and fat-free mass index of the hemodialysis patients with BIA S10, BIA 720, and DXA.

MethodsInBody S10 versus DXAInBody 720 versus DXA
Mean difference ± SD95% limits of agreementMean difference ± SD95% limits of agreement

Fat mass (kg)
 Male−0.42 ± 3.56−7.40 to 6.56−2.57 ± 3.74−9.90 to 4.76
 Female−0.41 ± 3.67−7.60 to 6.78−2.70 ± 2.92−8.42 to 3.02
 Total−0.41 ± 3.57−7.42 to 6.59−2.6 ± 3.47−9.41 to 4.19

Percentage of fat mass (%)
 Male0.28 ± 5.24−9.99 to 10.55−3.62 ± 5.24−13.89 to 6.65
 Female−0.42 ± 6.93−14.00 to 13.16−5.19 ± 5.74−16.44 to 6.06
 Total0.04 ± 5.84−11.41 to 11.48−4.13 ± 5.41−14.73 to 6.48

Fat-free mass (kg)
 Male−1.10 ± 4.00−8.94 to 6.740.98 ± 4.21−7.27 to 9.23
 Female−1.32 ± 3.74−8.65 to 6.010.96 ± 2.93−4.84 to 6.76
 Total−1.17 ± 3.88−8.79 to 6.440.98 ± 3.82−6.51 to 8.46

Fat mass index (kg/m2)
 Male−0.11 ± 1.28−2.62 to 2.40−0.88 ± 1.30−3.43 to 1.67
 Female−0.10 ± 1.52−3.08 to 2.88−1.06 ± 1.16−3.33 to 1.21
 Total−0.11 ± 1.36−2.78 to 2.56−0.94 ± 1.25−3.39 to 1.51

Fat-free mass index (kg/m2)
 Male−0.46 ± 1.45−3.30 to 2.380.29 ± 1.49−2.63 to 3.21
 Female−0.60 ± 1.56−3.66 to 2.460.35 ± 1.19−1.98 to 3.52
 Total−0.51 ± 1.48−3.41 to 2.390.31 ± 1.39−2.41 to 3.03

BIA = bioelectrical impedance analysis; DXA = dual-energy X-ray absorptiometry.