Table 2.
HRV and PRV index comparisons can be found in the corresponding literature (in parentheses). PC stands for the Pearson correlation coefficient (with the P values), and bias, SD, and BAR values are the results of the Bland-Altman analysis. The definitions of the HRV indices were introduced by us earlier.
| Derived index comparison | Cited value | Our value |
|---|---|---|
| SDNN-PC ([12]) | 0.933 | 0.999 |
| SDNN-BAR ([12]) | 19.17% | 3.5% |
| RMSSD-PC ([12]) | 0.78 | 0.996 |
| RMSSD-BAR ([12]) | 42.22% | 10.6% |
| pNN50-PC ([12]) | 0.5 | 0.993 |
| pNN50-BAR ([12]) | 79.91% | 30.6% |
| LP-PC ([12]) | 0.996 | 0.999 |
| LP-BAR ([12]) | 12.14% | 8.9% |
| HP-PC ([12]) | 0.996 | 0.995 |
| HP-BAR ([12]) | 10.22% | 25.6% |
| LP/HP-PC ([12]) | 0.982 | 0.941 |
| LP/HP-BAR ([12]) | 19.3% | 73.6% |
| avg(PP)-PC ([13]) | 0.993 | 1 |
| avg(PP)-bias ([13]) | −0.05 beats/min | 0.032 beats/min |
| avg(PP)-SD ([13]) | 1.03 beats/min | 0.11 beats/min |
| ln(RMSSD)-bias ([21]) | 0.94 | 0.103 |
| ln(RMSSD)-SD ([21]) | 1.77 | 0.153 |