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Figure 1 ROC Curves Showing the Ability of Peak VO2 to Predict Overall Mortality, SCD, and Pump Failure Death
For panel A overall mortality: area under the curve 0.71, p < 0.001, 95% confidence interval (CI) 0.61 to 0.81, optimal threshold  />14.4, sensitivity 67, specificity 72. For panel B sudden cardiac death (SCD): area under the curve 0.70, p = 0.006, 95% CI 0.58 to 0.82, optimal threshold />14.4, sensitivity 65, specificity 71. For panel C cardiac pump failure: area under the curve 0.66, p = 0.03, CI 0.51 to 0.78, optimal threshold />13, sensitivity 73, specificity 53. ROC = receiver-operating characteristic; VO2 = oxygen uptake.
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