Table 3.
Percentage of leads analysis possible and fitted logistic linear regression analysis comparing 12-lead ECG and 6L measurements
| % ECG leads that could be analysed | R² | ||
|---|---|---|---|
| Leads | 12L | 6L | |
| PR interval | 75.9% | 71.5% | 83.4% |
| QRS duration | 92.2% | 87.6% | 85.0% |
| Axis | 91.6% | 89.9% | 78.0% |
| QRS amplitude Lead I | 97.9% | 97.1% | 59.5% |
| QRS amplitude Lead II | 98.1% | 97.3% | 73.9% |
| QRS amplitude Lead III | 98.0% | 97.1% | 73.6% |
| QRS amplitude Lead AVR | 97.9% | 97.2% | 70.4% |
| QRS amplitude Lead AVL | 98.1% | 97.4% | 67.4% |
| QRS amplitude Lead AVF | 98.1% | 97.1% | 75.8% |
| QT Lead I | 67.9% | 71.6% | 75.8% |
| QTc Lead I | 67.9% | 71.5% | 46.2% |
| QT Lead II | 76.6% | 72.8% | 77.8% |
| QTc Lead II | 76.6% | 72.8% | 48.1% |
| QT Lead III | 55.4% | 51.4% | 72.9% |
| QTc Lead III | 55.4% | 51.3% | 48.5% |
| QT Lead AVR | 68.6% | 71.9% | 73.5% |
| QTc Lead AVR | 68.6% | 71.8% | 44.1% |
| QT Lead AVL | 58.2% | 66.1% | 75.5% |
| QTc Lead AVL | 58.2% | 66.0% | 46.1% |
| QT Lead AVF | 61.5% | 57.0% | 72.9% |
| QTc Lead AVF | 61.5% | 56.9% | 45.8% |
| Longest QT | 80.4% | 75.9% | 78.8% |
| QTc longest lead | 80.4% | 75.9% | 51.7% |