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Figure 1 Cardiac Events According to CAC Scores
Survival curves for freedom from cardiac death or nonfatal myocardial infarction (MI) (y-axis) among the coronary artery calcium (CAC) patients who had nonischemic exercise myocardial perfusion scintigraphy studies. (Left) Kaplan-Meier survival curve analysis as a function of CAC scores before adjustment for covariates of outcome. The p value is derived using the log-rank test. (Right) Cox proportional hazards model for freedom from cardiac death or MI risk adjusted for age, dyspnea, and coronary risk factors. The p value is that of CAC in the Cox risk-adjusted model. Patients with early myocardial revascularization were censored from the analysis. DM = diabetes mellitus; SOB = shortness of breath.
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