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Figure 1 Kaplan-Meier analysis of the probability of event-free survival in patients who developed non–Q-wave myocardial infarction following thrombolytic therapy (solid line) or spontaneously, i.e., in the absence of thrombolytic therapy (dashed line). The events included in this analysis were death and recurrent nonfatal myocardial infarction. The Cox proportional-hazards ratio for post-thrombolytic as compared with spontaneous non–Q-wave myocardial infarction was 0.92 (95% confidence interval, 0.6 to 1.40), adjusted for age, history of diabetes and prior myocardial infarction, and maximum creatine kinase level.
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