The Syndromic Spectrum of COVID-19 and Correlates of Admission Parameters with Severity-outcome Gradients: A Retrospective Study.

Background: Clinical and laboratory features of COVID-19 may have regional variations. This study aimed to discern their association with severity of illness and mortality in tertiary setup of Delhi, India.

Methods: Retrospective data of hospitalised COVID-19 patients over 3 months (end March to June 2020) were evaluated for symptom profile, blood investigations and chest radiograph data and classified according to COVID-19 severity and as survivors and non-survivors.