Table 4 Inter-parameter agreement matrix
Parameter | RMS | MAV | MAX | SSC | ZC | WL | MNF | MDF | SMR | DPR | SNR | Ω |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Root mean square (RMS) | 46 | 46 | 44 | 0 | 0 | 28 | 13 | 7 | 7 | 21 | 25 | 9 |
Mean absolute value (MAV) | 44 | 44 | 42 | 0 | 0 | 27 | 13 | 8 | 7 | 22 | 25 | 9 |
Maximum amplitude (MAX) | 38 | 39 | 39 | 0 | 0 | 24 | 12 | 7 | 4 | 18 | 23 | 7 |
Slope sign changes (SSC) | 0 | 0 | 0 | 31 | 20 | 4 | 0 | 1 | 2 | 0 | 0 | 0 |
Zero crossings (ZC) | 0 | 0 | 0 | 19 | 29 | 7 | 0 | 0 | 3 | 0 | 0 | 5 |
Waveform length (WL) | 30 | 27 | 27 | 6 | 6 | 45 | 5 | 2 | 8 | 12 | 13 | 8 |
Mean Frequency (MNF) | 13 | 14 | 13 | 0 | 0 | 5 | 42 | 30 | 5 | 20 | 17 | 5 |
Median Frequency (MDF) | 6 | 7 | 7 | 2 | 1 | 1 | 34 | 42 | 4 | 13 | 11 | 1 |
Signal-to-motion artifact ratio (SMR) | 2 | 3 | 3 | 1 | 1 | 2 | 0 | 0 | 4 | 2 | 2 | 1 |
Maximum-to-minimum drop in power density ratio (DPR) | 12 | 14 | 14 | 0 | 0 | 5 | 12 | 9 | 4 | 26 | 25 | 8 |
Signal-to-noise ratio (SNR) | 20 | 21 | 19 | 0 | 0 | 11 | 14 | 10 | 6 | 30 | 36 | 12 |
Power spectrum deformation (Ω) | 8 | 7 | 7 | 2 | 5 | 8 | 1 | 0 | 5 | 7 | 10 | 30 |