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Figure 3 Survival in stable, ambulatory chronic heart failure patients in a two-risk factor model using insulin sensitivity (SI) and peak oxygen uptake (VO2) as dichotomized variables: interaction of impaired SI (below median of 1.82 min–1·µU·ml–1·104), with the presence of low peak VO2 (peak VO2 <14 ml/kg/min) (patients with no risk factor: n = 41, 6 deaths; one risk factor: n = 44, 23 deaths; two risk factors: n = 20, 15 deaths). Kaplan-Meier survival curve for four-year survival.
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