CRP and diabetes mellitus: The parameters included in the initial model were age, gender, hypertension, coronary arterial disease, diabetes mellitus, chronic pulmonary disease, malignity, number of comorbidities, fever and dyspnea on admission, SpO2, WBC, monocyte, NLR, HGB, platelet count, urea, creatinine, GFR, AST, ALT, albumin, LDH, CK, CRP, PCT, ferritin, troponin, PT, aPTT, INR, D-dimer, fibrinogen and bilateral infiltration on CT.