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Figure 2 Median Survival of Heart Failure Patients Using Different AHI Cutoff Points

Survival was shorter in patients with more severe central sleep apnea than those who had less severe disorder. This is true for all categories. The p values show significance comparing the median survival. The respective hazard ratios: 2.14, p = 0.02; 2.13, p = 0.01; 1.76, p = 0.047; 1.93, p = 0.02; 1.85, p = 0.03; and 1.84, p = 0.04. AHI = apnea-hypopnea index.