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Figure 2 Hazard plot demonstrating survival according to creatinine clearance in patients with and without abnormal exercise tolerance with ejection fraction (EF), history of hospitalization, and diuretic use specified. Note that similar plots can be constructed for any specified EF, history of hospitalization, and diuretic use. WD6 = 6-min walk distance. A value of  262 m corresponded to the lowest quartile. Bold lines = probability of survival; broken lines = 95% confidence intervals.
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