Abbreviation : DM = diabetes mellitus, IHD = ischemic heart disease, HTN= Hypertension, COPD = chronic obstructive pulmonary disease, CKD = chronic kidney disease. SpO2 (O2 saturation), d-dimer, ferritin, CRP, Hb%, lymphocyte and neutrophils were measured on admission day. All p-values were derived by Pearson’s chi-square test
Note: RR: Relative Risk; CI: Confidence Interval; IQR: Interquartile Range
Normal range: Hb% (men: 13.5-17.5 gm/dl; female: 12-15.4 gm/dl); CRP (0-5 mg/L); serum ferritin (male: 20-250 ngm/ml; female: 10-120 ngm/ml); d-dimer: (≤ 0.5 µgm/ml)
Variables were then tested on a binary logistic regression model and only age (OR: 0.964; 95%CI: 0.94-0.98; p= 0.001) and on-admission SpO2 (OR: 1.064; 95% CI: 1.01-1.12; p=0.026) had statistically significant contribution to the model (Table-2) .
Table-2: Statistically significant variables on binary logistic regression model