NPPB and cardiac arrhythmia: The following variables were significantly higher in the CV event group than in the CV event-free group: age; the proportion of patients with DM, CAD, arrhythmia, cerebrovascular disease, or chronic lung disease; systolic blood pressure (BP); 24-hour urine volume; serum NT-proBNP concentrations, and the proportion of patients receiving clopidogrel.