Figure 4

Receiver operating characteristic (ROC) curve for logistic regression model used to test the discrimination ability of NLR (above or below 6.82) as a prognostic factor of poor clinical outcome adjusted to age, sex and Charlson comorbidity index among COVID-19 patients. NLR neutrophil-to-lymphocyte ratio, COVID-19 coronavirus disease 2019, AUC area under the curve, CCI Charlson comorbidity index.