Therefore, as illustrated in Table 1 , the median age (years) in the three groups showed a decreasing trend as LVEF increased: HFrEF 0.98 (0.39, 5.40), HFmrEF 0.43 (0.13, 3.20), and HFpEF 0.39 (0.13, 1.08).
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Pediatric heart failure classification based on left ventricular ejection fraction.
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