Table 9.
Mean error for typical HRV measures calculated after applying median and threshold filters, and the proposed algorithms for various peak sizes (NEEDED database).
| Signal | Method | RMSSD | SDNN | SDSD | Total Power |
LF | HF | SD1 | SD2 |
|---|---|---|---|---|---|---|---|---|---|
| Peak 2x | Median w = 3 | 52.52% | 2.29% | 52.61% | 6.11% | 31.76% | 23.67% | 52.61% | 0.71% |
| Thr m = 3 | 0.35% | 0.12% | 0.35% | 0.79% | 2.00% | 3.99% | 0.35% | 0.12% | |
| Algorithm 1 | 1.37% | 0.24% | 1.39% | 0.71% | 2.15% | 2.18% | 1.31% | 0.25% | |
| Peak 3x | Median w = 3 | 52.52% | 2.29% | 52.61% | 6.56% | 33.53% | 24.56% | 52.61% | 0.71% |
| Thr m = 3 | 0.43% | 0.13% | 0.43% | 1.58% | 4.23% | 7.98% | 0.43% | 0.14% | |
| Algorithm 1 | 1.28% | 0.25% | 1.30% | 0.78% | 2.18% | 2.74% | 1.30% | 0.25% |