Consistency of the estimated target weights and ECW/TBW using BIA after hemodialysis in patients between standing and lying-down positions

Table 3 Ultrafiltration related parameters of the subjects

Variable (n = 56)	Actual	S10, lying	770, standing	P value^a	P value^b	Pearson R^2c	Pearson R^2d
UF/TBW changes, kg, mean ± SD	2.0 ± 0.88	1.5 ± 1.0	1.7 ± 0.9	< 0.001	0.004	0.718	0.616
UF/TBW changes, kg, range	1.0 ~ 4.0	−0.5 ~ 4.0	0.1 ~ 4.2
Pre-HD weight/estimate target weight, kg, mean ± SD	60.4 ± 12.5	60.0 ± 12.6	60.1 ± 12.6	< 0.001	< 0.001	0.999	0.999
Post-HD weight/estimate target weight, kg, mean ± SD	58.5 ± 12.1	58.4 ± 12.3	58.5 ± 12.3	0.281	0.538	0.998	0.995

UF ultrafiltration, TBW total body water, HD hemodialysis, TBW changes = pre-HD TBW - post-HD TBW, estimated target weight: ECW/TBW ratio = 0.385, a: difference between actual value and S10, b: difference between actual value and 770, c: correlation between actual value and S10, d: correlation between actual value and S10

ISSN: 1471-2369