Table 2.

Treatment effect of the more frequent hemodialysis (6 times per week as compared to 3 times per week) on total body water, extra- and intracellular volume as measured by single- and multi-frequency bioimpedance (SF, MF), ultrafiltration volume and pre HD body weight of enrolled study subjects, who completed all measurements until Month 5 (18 conventional subject, 17 daily subjects). Data are presented as mean ± SD or mean and 95% CI as indicated.

Outcome	Method	Treatment	Baseline	Month 5	Change (Month 5 – Baseline)	Treatment effect of 6 times per week hemodialysis.
TBW [L]	MF BIS	conventional	40.7+/−8.2	41.3+/−9.3	0.6 (−5.3 to 6.6)	−1.8 (−4.2 to 0.6)
		more frequent	42.8+/−9.1	41.7+/−7.3	−1.1 (−6.9 to 4.6)
	SF BIA	conventional	45.8+/−9	46.1+/−8.6	0.3 (−5.7 to 6.3)	−1.3 (−3.1 to 0.5)
		more frequent	46.7+/−7.8	45.7+/−7.5	−1 (−6.3 to 4.3)
ICF [L]	MF BIS	conventional	22+/−5.6	22.3+/−6.5	0.3 (−3.8 to 4.5)	−0.3 (−2.4 to 1.8)
		more frequent	23.4+/−6.1	23.5+/−5.2	0.1 (−3.9 to 4)
	SF BIA	conventional	22.9+/−7.3	22.5+/−6.3	−0.4 (−5 to 4.2)	0.4 (−1.6 to 2.3)
		more frequent	23.7+/−5	23.7+/−5	−0.1 (−3.5 to 3.4)
ECF [L]	MF BIS	conventional	18.7+/−3.1	19+/−3.3	0.3 (−1.8 to 2.5)	−1.5 (−2.5 to −0.5)
		more frequent	19.4+/−3.5	18.2+/−2.8	−1.2 (−3.4 to 1)
	SF BIA	conventional	22.9+/−4	23.6+/−3.7	0.7 (−1.9 to 3.3)	−1.7 (−3.5 to 0.1)
		more frequent	23+/−4	22+/−4.3	−0.9 (−3.9 to 2)
UFV (per session [L])**	flowmeter	conventional	3.3±0.8	3.2±1.0	−0.1 (−0.9 to 0.6)	−1.0 (−1.6 to −0.4)*
		more frequent	3.2±0.9	2.0±0.6	−1.2 (−1.7 to −0.5)
Pre HD weight [kg]	weighing scale	conventional	85.8±18.7	85.6±17.3	−0.2 (−12.4 to 12.0)	0.9 (−3.8 to.5.6)
		more frequent	82.6±19.3	83.3±18.3	0.7 (−12.4 to 13.9)

^*and bold letters indicates P<0.05.

^**data only available from 14 daily and 13 conventional subjects.