Table 4.
Logistic regression analyses on the association between adverse cardiovascular outcome (aCVO) and xBRS and heart rate variability.
| R2 | β | Odds Ratio | 95% Confidence Interval | p | |
|---|---|---|---|---|---|
| xBRS | |||||
| Model 1 | 0.041 | −0.882 | 0.414 | [0.356, 0.470] | <0.001 |
| Model 2* | 0.118 | −0.534 | 0.586 | [0.499, 0.689] | <0.001 |
| Model 3*† | 0.135 | −0.209 | 0.811 | [0.673, 0.978] | 0.028 |
| Model 4*†‡ | 0.192 | −0.071 | 0.932 | [0.769, 1.129] | 0.470 |
| RMSSD | |||||
| Model 1 | 0.018 | −0.652 | 0.521 | [0.441, 0.616] | <0.001 |
| Model 2* | 0.110 | −0.360 | 0.698 | [0.588, 0.828] | <0.001 |
| Model 3*† | 0.179 | 0.015 | 1.015 | [0.844, 1.220] | 0.877 |
| Model 4*†‡ | 0.197 | 0.011 | 1.011 | [0.838, 1.220] | 0.909 |
| SDNN | |||||
| Model 1 | 0.022 | −0.868 | 0.420 | [0.344, 0.513] | <0.001 |
| Model 2* | 0.111 | −0.442 | 0.643 | [0.524, 0.789] | <0.001 |
| Model 3*† | 0.179 | −0.117 | 0.890 | [0.717, 1.103] | 0.286 |
| Model 4*†‡ | 0.197 | −0.080 | 0.923 | [0.741, 1.150] | 0.476 |
Each model shows the regression results of xBRS, RMSSD, and SDNN.
*Adjusted for antihypertensive medication.
†Adjusted for sociodemographic covariates (sex, age, education, and ethnicity).
‡Adjusted for health-behavioral and psychosocial covariates (smoking, alcohol, body mass index, physical activity, current stress).
xBRS, baroreflex sensitivity; RMSSD, a parameter reflecting heart rate variability calculated as the square root of the mean squared successive differences between adjacent normal-to-normal interbeat intervals; SDNN, a parameter reflecting heart rate variability calculated as the standard deviation of normal-to-normal interbeat intervals.