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Figure 1 Mortality After Aortic Valve Surgery in Propensity-Matched Patients With and Without Severe LVD
(A) Survival. Each square (severe left ventricular dysfunction [LVD] group) and circle (nonsevere LVD group) represents an event; vertical bars represent confidence intervals equivalent to ±1 standard error (68% confidence limit). Numbers in parentheses represent patients at risk for death. Solid lines are parametric estimates enclosed within 68% confidence limits. (B) Hazard ratio comparing hazard for death of patients with severe versus nonsevere LVD enclosed within 68% confidence limits.
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