The demographics and clinical characteristics in the study subjects are shown in Table   118 1. 190 To identify the factors that may affect COVID-19 progression, we obtained the crude odds 191 ratio (OR) after conducting the logistic regression analysis ( showed that NLR was positively correlated with the risk of COVID-19 (Table 4) . 195 Nevertheless, the risks of WBC, CRP, PLR, and d-NLR were unclear.
196 that NLR was an early new marker of aiv-h7n9 infection in patients [31] .However, 259 the application of NLR in other viral pneumonia was rarely reported.In our study, we 260 found that NLR can be used as a prognostic factor for covid-19. Finally, the findings 261 of this study indicate that elevated NLR is an independent prognostic biomarker for 262 COVID-19 patients. NLR can increase evaluated capacity for COVID-19 patients. 263 Therefore, the usable NLR and age are recommended as practical tools to assess conclusions of this study support that elevated NLR is an independent prognostic 279 biomarker for COVID-19 patients.
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The authors declared that they have no competing interest.