(Fig. 3 set here)
In the pneumonia associated with SARS-CoV-2 group (n = 127), we found that the GGO ratio was correlated with FiO2, PaO2/FiO2 ratio (r= 0.59, -0.58; p <0.01, respectively). Although the consolidation ratio associated with FiO2, PaO2/FiO2 ratio (r = 0.32, -0.39;p <0.01, respectively), the strength of correlation was weaker when compared with GGO. Multiple linear regression result indicated that GGO ratio was associated with PaO2/FiO2(ß= -3.0, p <0.01; R2 = 0.4,p for model <0.01 ) when adjusted with consolidation ratio (ß= -0.85, p =0.25 ), Age (ß = -0.98, p =0.08 ), Gender (ß = 4.10, p =0.73 ), hemoglobin level (ß = 0.15, p =0.54 ), and D-Dimer level (ß = 0.03,p =0.58 ); while the consolidation ratio was correlated with PaCO2 level (ß = 0.43, p <0.01;R2 = 0.28, p for model<0.01 ) when adjusted with GGO ratio (ß = -0.1, p =0.98 ), Age (ß = -0.037, p =0.57 ), Gender (ß = -3.5, p =0.01 ), hemoglobin level (ß = 0.008, p =0.77 ), and D-Dimer level (ß = -0.001, p =0.80 ). Additionally, the consolidation ratio (ß = 0.692, p<0.01 )) also associated with neutrophil–lymphocyte ratio (NLR) when adjusted with GGO ratio (ß = 0.003, p =0.99 ) (The results of multiple linear regression were demonstrated in Fig.4.)