ALB and COVID-19: As shown in Table 1, univariable analysis showed that age (p < 0.001), comorbidity (p < 0.001), leukocyte count (p = 0.011), lymphocyte count (p = 0.026), neutrophil count (p < 0.001), procalcitonin (p < 0.001), aspartate transaminase (p < 0.001), lactate dehydrogenase (p < 0.001), albumin (p = 0.001), creatinine (p = 0.004), lesion size (p < 0.001) and number of involved lung segments (p < 0.001) were significantly related to the severity of COVID-19.