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