Table 2.
Correlations of heart rate variability parameters with systolic and diastolic blood pressure for baseline absolute values and changes (delta) after 12-month treatment.
| Baseline—R (Correlation Coefficient) | ||
|---|---|---|
| HRV Parameters | SBP (mmHg) | DBP (mmHg) |
| SDNN_24 h (ms) | −0.06 | −0.23 ** |
| rMSSD_24 h (ms) | −0.07 | −0.23 ** |
| pNN50_24 h (%) | −0.06 | −0.21 * |
| Change after treatment (delta)—R (correlation coefficient) | ||
| SBP (mmHg) | DBP (mmHg) | |
| SDNN_24 h (ms) | −0.28 ** | −0.31 # |
| rMSSD_24 h (ms) | −0.21 * | −0.40 # |
| pNN50_24 h (%) | −0.04 | −0.10 |
Statistically significant correlations: * p < 0.05; ** p < 0.01; # p < 0.001. DBP—diastolic blood pressure; HRV—heart rate variability; pNN50—the proportion of pairs of successive NN intervals that differ by more than 50 ms; rMSSD—the square root of the mean of the sum of the squares of differences between adjacent NN intervals; SBP—systolic blood pressure; SDNN—standard deviation of the average of NN intervals.