Figure 1.

Prevalence of electrocardiogram (ECG) abnormalities in the Oregon SUDS, and risk of sudden cardiac death (SCD) associated with the ECG risk score. (A) Distribution of ECG abnormalities between SCD cases and controls. ECG parameters included in the model were elevated resting heart rate, ECG left ventricular hypertrophy, delayed QRS transition, QRS-T angle >90°, prolonged QTc, and prolonged TpTe. (B) Cumulative risk of SCD associated with the presence of multiple ECG abnormalities. Model adjusted for age, sex, hypertension, diabetes, and left ventricular function.