Comparison of hemoglobin level and neutrophil to lymphocyte ratio as prognostic markers in patients with COVID-19.

Background: Anemia can negatively affect the outcome of many diseases, including infections and inflammatory conditions.

Aim: To compare the prognostic value of hemoglobin level and the neutrophil/lymphocyte ratio (NLR) for prediction of coronavirus disease 2019 (COVID-19) severity.

Methods: In this retrospective cohort study, clinical data from patients with laboratory-confirmed COVID-19 were collected from hospital records from 10 April 2020 to 30 July 2020.