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Comparison of Survival of Medically and Surgically Treated Coronary Disease Patients in Seattle Heart Watch: A Nonrandomized Study

Survival analyses using the Cox regression model and adjusting for important survival-related baseline characteristics demonstrate improved survival with surgical therapy for the group of patients with coronary disease as a whole. This observation appears to hold for asymptomatic and mildly symptomatic patients as well as for patients with more severe symptoms. Subgroup analyses indicate that the greatest beneficial treatment effect is seen primarily in patients with three-vessel disease and normal or moderately abnormal left ventricular function who are older than 48 years of age and have no ventricular arrhythmia on the ECG obtained at rest.