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In Danish administrative registers, ejection fraction (EF) is not recorded, which is a considerable limitation for correct subclassification of patients with heart failure (HF). We hypothesized that a diagnosis of HF combined with the recorded prescription of both renin-angiotensin system (RAS) inhibitors and beta- blockers ( RASi+BB ) within 120 days could identify patients with HF and reduced ejection fraction (EF ≤40%) (HFrEF).

<p>Identification of Patients with New-Onset Heart Failure and Reduced Ejection Fraction in Danish Administrative Registers</p>