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Multivariable Cox proportional‐hazard models of the five frailty components, adjusted for LVEF, MMSE, AIS, BADL, IADL, polypharmacy, age, and male sex. Frailty was diagnosed based on the Fried phenotype. 95% CI, 95% confidence interval; AIS, Athens Insomnia Scale; BADL, basic activities of daily living; HF, heart failure; HR, hazard ratio; IADL, instrumental activities of daily living; LVEF, left ventricular ejection fraction; MMSE, Mini‐Mental State Examination.
