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Figure 1 (A) Mode of death in patients with ejection fractions (EF) >45% and  45%. (B) Kaplan-Meier survival curve showing proportion of patients free of death due to progressive heart failure, dichotomized into those with serum sodium levels above (upper line) and below (lower line) the median value of 140 mmol/l (p < 0.001). (C) Kaplan-Meier survival curve showing proportion of patients free of death due to progressive heart failure, dichotomized into those with serum creatinine levels above (upper line) and below (lower line) the median value of 111µmol/l (p = 0.02). (D) Kaplan-Meier survival curve showing proportion of patients free of death due to progressive heart failure, dichotomized into those with standard deviation of all normal-to-normal RR intervals (SDNN) above (upper line) and below (lower line) the median value of 112 ms (p = 0.01).
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