Univariate regression analysis was performed for all the statistically significant variables of the study and most of the known predictors of mortality after OPCAB like age, gender, history of smoking, hypertension, diabetes mellitus, WBC count, Neutrophil/Lymphocyte ratio, haemoglobin, CRP, and Platelet count, etc. Only RDW with OR 1.568, 95% CI 1.076–2.284, p = 0.019, and EuroSCORE II with OR 5.809, 95% CI 1.778- 18.979, p = 0.004 were found significant. Here, CRP is linked to diabetes mellitus.