Table I.
The Mean and standard deviation (S d.) and corresponding p-Value of the top ten ranked features extracted by FZE and K-NNE from 4-level decomposition of HRV signals by MSWP transform for NSR-CAD and Self_NSR-CAD data set. Top ten ranked features arrange on the basis of highest Fisher score to low score (top to bottom, 1st and 5th column) in the table for both data set. L indicates the level of decomposition; App. represents approximate coefficient and Det. represents detail coefficient of decomposed subspace signals. For statistical significance, if p>0.05: not significant, p≤0.05: significant and p<0.01: very significant.
| Features-Level/Approximate or Detail coefficient | NSR (Mean ± S d.) | CAD (Mean ± S d.) | p-Value | Features-Level/Approximate or Detail coefficient | Self-NSR (Mean ± S d.) | CAD (Mean± S d.) | p-Value |
|---|---|---|---|---|---|---|---|
| FZE-L4-App. | 0.038±0.017 | 0.12±0.081 | 1.30E-12 | K-NNE-L4-App. | −2.938±0.666 | −1.727±1 | 3.71E-08 |
| FZE-L4-Det. | 0.033±0.016 | 0.105±0.071 | 1.74E-12 | FZE-L4-Det. | 0.029±0.013 | 0.101±0.07 | 2.87E-07 |
| FZE-L4-Det. | 0.03±0.015 | 0.101±0.07 | 9.99E-10 | FZE-L3-Det. | 0.021±0.01 | 0.08±0.058 | 2.33E-07 |
| FZE-L4-App. | 0.039±0.019 | 0.115±0.076 | 1.05E-10 | FZE-L2-Det. | 0.016±0.008 | 0.062±0.047 | 2.15E-05 |
| FZE-L4-App. | 0.036±0.016 | 0.123±0.088 | 2.19E-10 | FZE-L1-App. | 0.011±0.006 | 0.048±0.037 | 1.7E-04 |
| K-NNE-L4-App. | −2.931±0.737 | −1.72±1.004 | 1.61E-10 | K-NNE-L4-App. | −2.857±0.661 | −1.72±1.004 | 9.6 E-07 |
| FZE-L3-App. | 0.025±0.015 | 0.082±0.056 | 2.23E-09 | FZE-L4-App. | 0.038±0.021 | 0.123±0.088 | 8.30E-07 |
| FZE-L3-Det. | 0.023±0.015 | 0.08±0.058 | 1.26 E-09 | FZE-L3-App. | 0.028±0.014 | 0.082±0.056 | 8.23 E-07 |
| K-NNE-L4-Det. | −3.062±0.891 | −1.761±1.041 | 3.18E-09 | FZE-L4-Det. | 0.037±0.018 | 0.105±0.071 | 9.38 E-06 |
| K-NNE-L3-App. | −3.409±0.891 | −2.108±1.041 | 3.18E-09 | K-NNE-L3-Det. | −3.691±0.733 | −2.293±1.343 | 5.86E-06 |