Interrater and Intrarater Reliability of Electrical Impedance Myography: A Comparison between Large and Small Handheld Electrode Arrays

Table 1

Between-day longitudinal biceps EIM measurements.

		Large sensor			Small sensor
		1st measurement	2nd measurement	d	1st measurement	2nd measurement	d
50 kHz	Phase	20.93(3.52)	21.38 (3.25)	−0.45	12.23 (4.31)	11.75 (3.58)	0.48
	Reactance	9.83 (1.08)	10.13 (1.27)	−0.31	13.31 (3.10)	12.61 (2.72)	0.70
	Resistance	26.59 (6.91)	26.70 (7.16)	−0.11	64.54 (16.60)	63.18 (16.40)	1.36
100 kHz	Phase	22.13 (3.54)	22.56 (3.51)	−0.43	15.17 (3.82)	14.64 (3.27)	0.53
	Reactance	8.46 (1.11)	8.63 (1.31)	−0.17	14.97 (3.16)	14.19 (3.08)	0.77
	Resistance	21.63 (6.38)	21.56 (6.52)	0.07	57.11(15.54)	56.27 (15.53)	0.85

Note: mean (standard deviation); d: mean difference between first and second measurements.