Table 2.

BIS reliability

BIS variable	ICC (95% CI)	BIS trial number*	BIS measure coefficient (95% CI)	p value
R 0	0.999 (0.999–0.999)	2	−  0.07 (− 0.68–0.54)	0.83
		3	− 0.06 (− 0.68–0.55)	0.84
R i	0.999 (0.998–0.999)	2	0.41 (− 1.90–2.71)	0.73
		3	2.06 (− 0.24–4.37)	0.80
R inf	0.9996(0.999–0.999)	2	0.01 (− 0.30–0.32)	0.94
		3	0.07 (− 0.24–0.38)	0.66
ECF	0.999 (0.998–0.999)	2	0.03 (− 0.17–0.22)	0.78
		3	0.12 (− 0.07–0.32)	0.22
ICF	0.997 (0.996–0.998)	2	− 0.12 (− 0.46–0.22)	0.49
		3	− 0.26 (− 0.61–0.08)	0.13
TBF	0.999 (0.999–0.999)	2	− 0.09 (− 0.38–0.20)	0.53
		3	− 0.14 (− 0.43–0.15)	0.33

ICC intraclass correlation coefficient, R₀ resistance at zero frequency, R_i intracellular resistance, R_inf resistance at infinite frequency, ECF extracellular fluid, ICF intracellular fluid, TBF total body fluid, BIS bioimpedance spectroscopy, CI confidence intervals

*Each BIS measure coefficient is in reference to measure 1 of the triplicate measures