CRP and diabetes mellitus: No statistically significant differences were observed between the two groups in terms of sex, age, hypertension, malignancy, coronary artery disease, diabetes, stroke, Charlson comorbidity index score, hospital-acquired pneumonia, history of corticosteroid use, surgical history, white blood cell count, C-reactive protein level, oxygenation index, bilirubin level, Glasgow Coma Scale score, or fibrinogen level (P ≥ 0.05, Table 2).