NPPB and atrial fibrillation: In the matched cohort, according to the univariate Cox proportional hazardsregression analysis, age, sex, AF, hyperlipidemia, smoking history, heart rate,aspartate transaminase, direct bilirubin, creatinine, high-density lipoprotein,NT-proBNP, QT duration, left atrial diameter, and LVEF were significantpredictors of death from any causes in patients with HCM patients when theclinical, laboratory, electrographic, and electrocardiographic data wereconsidered.