3.3 Correlation analysis and regression analysis
Correlation analysis showed that diabetes, NLR, CRP and ALB had a significant correlation with severe COVID-19 pneumonia in the heavy group (P < 0.05) (Table 4). Diabetes, NLR and CRP were positively correlated, whereas ALB was negatively correlated with severe COVID-19 pneumonia in the heavy group. Further, multi-factor logistic regression analysis of diabetes, NLR, CRP, ALB and severe COVID-19 pneumonia found that NLR was an independent risk factor for severe COVID-19 pneumonia in the heavy group (OR = 1.264, 95% CI: 1.046~1.526, P = 0.015) (Table 5).