NPPB and diabetes mellitus: Univariate Cox regression analysis identified several variables significantly associated with atrial arrhythmias: diabetes (HR = 9.50, 95% CI: 1.15–78.32, P = 0.038), age (per 1-year increase: HR = 1.08, 95% CI: 1.01–1.16, P = 0.032), elevated NT-proBNP (≥300 pg/mL: HR = 2.85, 95% CI: 1.16–6.99, P = 0.004), hypertension (HR = 4.85, 95% CI: 1.02–25.13, P = 0.047), elevated troponin I (≥10 ng/L: HR = 2.95, 95% CI: 1.11–7.82, P = 0.029), creatinine level (per unit increase: HR = 1.02, 95% CI: 1.00–1.04, P = 0.028), and reduced eGFR (<60 mL/min: HR = 2.58, 95% CI: 1.05–6.37, P = 0.038).