N, number of patients; ALC, absolute lymphocyte counts; AEC, absolute eosinophil counts; TBIL, total bilirubin; A/G, albumin/globulin; CRP/ALB, C-reactive protein/albumin; COVID-19, coronavirus disease 2019; LDH, lactate dehydrogenase; CI, confidence interval; AOR, adjusted odds ratio. Here, ALB is linked to COVID-19.