NPPB and diabetes mellitus: After including POAF risk factors, such as age, male sex, BMI, hypertension,diabetes, LAD, LVEF, CK-MB, K+, and BNP, in the multivariable logisticregression analysis, we found that the statistically significant risk factorswere age, BMI, on-pump CABG, long operation time, Mg2+, CK-MB, TnI, BNP,LAD, and low LVEF (all p < 0.05, shown in Supplementary Table 4).