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. Author manuscript; available in PMC: 2014 Oct 7.
Published in final edited form as: Am Heart J. 2013 Sep 18;166(4):744–752. doi: 10.1016/j.ahj.2013.06.023

Figure 3.

Figure 3

Kaplan-Meier event-free survival curves for the primary endpoint of sudden cardiac death, stratified by predicted SCD risk based on the multivariable model. Using the multivariate model, patients in the validation cohort with left ventricle ejection fraction (LVEF) ≤ or > 35% were further stratified into one of three groups based on predicted SCD risk at 24 months: <1%, 1-6% and >6%. The survival curves demonstrate that even among patients stratified by LVEF, there is still significant heterogeneity in SCD risk, which can be accurately predicted by the multivariable model. The number of patients (n) in each predicted risk group is listed. Of note, there were no patients in the LVEF ≤ 35% cohort with predicted SCD risk of <1% at 24 months, and therefore, only 5 curves are plotted. The p value by log-rank test is <0.001, suggesting a significant difference in survival across subgroups.