Table 4 Measures included in the 10-s ECG Heart Age for female subjects.
From: Heart age estimated using explainable advanced electrocardiography
Measure | Estimate | Standard error | t ratio |
|---|---|---|---|
(Intercept) | − 70.477 | 2.662 | − 26.47 |
Age, years | 0.850 | 0.008 | 104.26 |
P-wave duration, ms | 0.331 | 0.008 | 40.73 |
Spatial QT interval, ms | 0.095 | 0.004 | 23.58 |
Heart rate, min−1 | 0.281 | 0.014 | 20.57 |
QRS max amplitude in VCG lead Y, µV | − 0.009 | 0.000 | − 18.54 |
Frontal plane QRS axis, radians | − 6.354 | 0.447 | − 14.21 |
Spatial ventricular gradient minus Spatial mean QRS, mV*s | − 67.642 | 5.049 | − 13.40 |
T-wave complexity, Ln ∑(EV3:8)/(EV1–EV2), unitless | 2.359 | 0.185 | 12.72 |
QRS RMS in VCG vector magnitude lead,mV | 11.701 | 1.822 | 6.42 |
QRS average spatial velocity in VCG vector magnitude lead, mV/s | 0.116 | 0.019 | 6.10 |
Portion of QRS loop in posterior superior quadrant of left sagittal plane by VCG, % | 0.034 | 0.010 | 3.22 |
