Table 4. ECG Variable Multivariate Analysis Variable ECG With Logistic Regression to Test the Possibility of Systolic Heart Failure or HFrEF (n = 110) .
| ECG parameter | OR | IK 95% | P |
|---|---|---|---|
| LVH | 1.24 | 0.284 - 5.407 | 0.774 |
| Poor R wave | 2.004 | 0.423 - 9.494 | 0.381 |
| LAD | 0.661 | 0.161 - 2.708 | 0.565 |
| RAD | # | # | # |
| Q wave | 3.756 | 0.947 - 14.891 | 0.060 |
| LBBB | # | # | # |
| LAH | 4.449 | 1.109 - 17.848 | 0.035* |
| Wide QRS | 12.657 | 3.277 - 48.895 | < 0.0001* |
| RBBB | 0.109 | 0.012 - 0.986 | 0.049* |
| ST-T changes | 4.35 | 1.277 - 14.817 | 0.019* |
| Prolong QT | 7.401 | 2.134 - 25.672 | 0.002* |
*Statistically significant. #n.a. LAH: left atrial hypertrophy; LVH: left ventricular hypertrophy; LAD: left axis deviation; RAD: right axis deviation; LBBB: left bundle branch block; RBBB: right bundle branch block.