Table 3.
Multivariate analysis for prediction of frequency domain and cardiac and autonomic variables by clinical features.
| Dependent Variables | Model Variables | BETA (β) |
SE | p-Value | R2 |
|---|---|---|---|---|---|
| E/I-ratio | MGFA | −0.36 | 0.16 | 0.034 | 0.15 |
| HF-sBP | Sex | −0.35 | 0.17 | 0.042 | 0.14 |
| BRS | MGFA | −0.44 | 0.15 | 0.005 | 0.33 |
| Age | −0.35 | 0.14 | 0.020 | ||
| CI | Sex | 0.33 | 0.16 | 0.047 | 0.17 |
| TPRI | Age | 0.47 | 0.14 | 0.002 | 0.35 |
| Sex | −0.40 | 0.14 | 0.002 | ||
| EDI | Age | −0.47 | 0.15 | 0.003 | 0.26 |
| IC | Age | −0.41 | 0.15 | 0.011 | 0.21 |
| Tilt CI | Age | −0.68 | 0.12 | <0.001 | 0.52 |
| Sex | 0.30 | 0.12 | 0.024 | ||
| Tilt LVWI | Age | −0.61 | 0.13 | <0.001 | 0.45 |
| Tilt LF-RRI | Age | −0.50 | 0.15 | 0.002 | 0.25 |
| Tilt PSD-RRI | Age | −0.37 | 0.16 | 0.028 | 0.16 |
| Tilt TFC | Sex | −0.32 | 0.15 | 0.043 | 0.30 |
| DELTA LF/HF-RRI | MGFA | 0.34 | 0.16 | 0.047 | 0.18 |
Expiration/inspiration ratio (E/I–ratio), high frequency of systolic blood pressure variability (HF-sBP), baroreflex sensitivity (BRS), cardiac index (CI), total peripheral resistance index (TPRI), end-diastolic index (EDI), index of contractility (IC), left ventricular work index (LVWI), low frequency of heart rate variability (LF-RRI), power spectral density R-R interval (PSD-RRI), thoracic fluid content (TFC), ratio between low and high band for heart rate variability (LF/HF-RRI), standardized beta coefficient (β ), standard error (SE), R, squared (R2).