Fig. 5: Heatmap of feature importance analyses of XGBoost models with ECG measurements, age, and sex.

Information gain-based feature importance for various cardiovascular conditions with XGBoost models based on ECG measurements showed substantial information gain with P-duration for prediction of AF, heart rate for SVT, RR interval for UA etc. ECG electrocardiogram. Abbreviations for ECG measurements and diseases are provided in Supplementary Tables 8 and 9.