Research Article

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

Table 4

Reliability indices for between-days intrarater reliability of both sensors.

Between-days intraraterLarge sensorSmall sensor
ICCSEMSRD95% LOAICCSEMSRD95% LOA

50 kHzPhase0.98 (0.95–0.99)0.130.99−5.66–3.810.84 (0.59–0.94)1.873.79−13.59–7.78
Reactance0.90 (0.73–0.96)0.221.30−4.73–3.350.63 (0.02–0.85)3.305.04−15.28–8.62
Resistance0.95 (0.85–0.98)0.542.03−11.73–6.850.95 (0.88–0.98)2.384.27−29.09–15.52

100 kHzPhase0.98 (0.96–0.99)0.131.00−5.85–3.900.91 (0.76–0.96)0.992.76−10.10–6.30
Reactance0.90 (0.74–0.96)0.221.31−4.76–3.360.84 (0.60–0.94)1.473.36−11.24–6.60
Resistance0.96 (0.88–0.98)0.431.81−10.49–6.220.96 (0.89–0.98)1.983.90−25.98–13.97