Figure 3. Infection rate in risk stratification. (A) Infection rate stratified by leukocyte, age, eosinophil, and radiological evidence of pneumonia in training group; (B) Infection rate stratified by leukocyte, age, eosinophil, and radiological evidence of pneumonia in validation group; (C) Infection rate according to COVID-19-REAL score in training group; (D) Infection rate according to COVID-19-REAL score in validation group.