Prospective validation and comparison of COVID-GRAM, NEWS2, 4C mortality score, CURB-65 for the prediction of critical illness in COVID-19 patients

TO THE EDITOR, When a patient is hospitalizated with COVID-19, prediction of the risk of development of severe or critical illness is of great importance [1]. Several risk scores have been described such as COVID-GRAM [2], National Early Warning Score 2 (NEWS 2) [3] and 4C mortality score [4]. [...]