3.1. Baseline characteristics and univariate analyses of ECG parameters
DCM, non-DCM
ATRIOVENTRICULAR BLOCK, LEFT BRANCH BUNDLE BLOCK, LVH, RIGHT BRANCH BUNDLE BLOCK, RBBB, LBBB, DILATED CARDIOMYOPATHY, LEFT VENTRICULAR HYPERTROPHY
A total of 234 patients including 117 DCM patients and 117 non-DCM patients were enrolled in our study. The baseline characteristics are shown in Table Baseline characteristics.ACEI = angiotensin-converting enzyme inhibitors, ARB = angiotensin II receptor blocker, ARNI = angiotensin receptor-neprilysin inhibitor, AVB = atrioventricular block, BMI = body mass index, BNP = brain natriuretic peptide, DCM = dilated cardiomyopathy, ECG = electrocardiogram, LAD = left atrial diameter, LBBB = left bundle branch block, LVEDD = left ventricular end-diastolic diameter, LVEF = left ventricular ejection fraction, LVH = left ventricular hypertrophy, MRA = mineralocorticoid receptor antagonist, NYHA = New York heart association, RBBB = right bundle branch block.The training dataset included 94 patients in the DCM group and 97 patients in the non-DCM group. All parameters automatically output by ECG data management system were checked manually and confirmed without error. Univariate analyses identified a number of indicators, including PR interval (173ms vs 156ms, The validation dataset included 23 patients in the DCM group and 20 patients in the non-DCM group. Univariate analyses identified a number of indicators, including QRS axis (−3.0°vs 49.5°, Electrocardiogram parameters and univariate analyses.DCM = dilated cardiomyopathy, QTc = corrected QT interval according to heart rate, RA = the amplitude of R wave, SA = the amplitude of S wave.