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Prevalence characteristics of SDB classification. (A–D) represent the prevalence of SDB in different sex (A), age (B), BMI (C), and LVEF (D) groups of patients. BMI, body mass index; CSA, central sleep apnea; LVEF, left ventricular ejection fraction; nmSDB, no or mild sleep‐disordered breathing; OSA, obstructive sleep apnea
