Table 2.
Variable importance for identifying PSVT using sinus rhythm ECG
| Rank | Logistic regression (defiance difference) | Random forest (mean decrease Gini) | Deep learning (relative importance) |
|---|---|---|---|
| 1 | Heart rate (−8.51) | R-wave axis (29.09) | QT interval (0.272) |
| 2 | RBBB (−6.35) | PR interval (28.12) | PR interval (0.139) |
| 3 | QRS duration (−4.89) | P-wave axis (27.24) | QRS duration (0.099) |
| 4 | PR interval (−2.01) | T-wave axis (26.97) | Heart rate (0.093) |
| 5 | T-wave axis (−0.92) | QT interval (26.24) | P-wave axis (0.072) |
| 6 | Sex (−0.44) | Age (25.74) | T-wave axis (0.071) |
| 7 | QT interval (−0.33) | QRS duration (24.11) | R-wave axis (0.059) |
| 8 | LBBB (−0.29) | Heart rate (23.47) | LBBB (0.057) |
| 9 | P-wave axis (−0.22) | Sex (5.24) | Age (0.055) |
| 10 | R-wave axis (−0.19) | RBBB (1.36) | RBBB (0.043) |
| 11 | Age (−0.10) | LBBB (0.23) | Sex (0.041) |