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. 2013 Dec 24;62(25):2406–2413. doi: 10.1016/j.jacc.2013.07.080

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© 2013 Elsevier Inc.

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Impact of Extent of Competing Mortality Risks on Lifespan Gain From Biventricular Pacing

As the proportion of non-heart-failure–related mortality is increased from one-quarter (A, D) to one-half (B, E) to three-quarters (C, F), the Kaplan-Meier curves (A to C) become progressively closer together. Correspondingly, lifespan gain becomes progressively smaller (D to F). This is true at every timepoint and regardless of whether it is calculated per patient (red curve) or per device (black curve).