Table 2
Selected features for randomly selected subjects
| Features | Correlation coefficient | P-value | Definitions |
| HR | 0.88 | 8.92×10−24 | Time span between two main peaks of the wave |
| T1 | 0.80 | 1.03×10−16 | Time span rate between A and J |
| Tcd | 0.46 | 6.21×10−05 | Time span rate between C and D |
| H1 | −0.63 | 5.02×10−09 | Relative height of the secondary trough |
| SV | 0.68 | 6.51×10−11 | Average blood flow during pulse cycle |
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