Figure 3.

Subgroup Analysis of Area Under the Receiver-Operating Characteristic Curve Values for External Validation of Models

Performance in the full cardiac magnetic resonance cohort across various patient subgroups is shown, including sex, age, QRS duration, heart rate, atrial fibrillation status, coronary disease, types of cardiomyopathies, and myocarditis. The total number of patients is listed, along with the number of cases with left ventricular systolic dysfunction in the chosen category (n patients [cases EF<40%]). CMR; Cardiac Magnetic Resonance imaging, AUROC values are provided with 95% CIs to give insights into model performance within specific populations. AUROC = area under the receiver-operating characteristic curve; CGMH = Chang Gung Memorial Hospital; CMP = cardiomyopathy; DCM = dilated cardiomyopathy; ECG = electrocardiogram; EF = ejection fraction; HCM = hypertrophic cardiomyopathy.