ALB and COVID-19: We performed Cox regression analysis, which demonstrated that comorbidity (HR 3.17, 95% CI 1.96–5.11), ALB level (HR 3.67, 95% CI 1.91–7.02), CRP level (HR 3.16, 95% CI 1.68–5.96), and age ≥60 years (HR 2.31, 95% CI 1.43–3.73) were independent risk factors for severe COVID-19 in these patients (Table 2).