Association of Underlying Comorbidities and progression of COVID-19 Infection Among 2586 Patients Hospitalized in the National Capital Region of India: A Retrospective Cohort Study

Objectives This study is conducted to observe the association of diabetes (DM), hypertension (HTN), and chronic kidney disease on the prognosis and mortality of COVID-19 infection in hospital admitted patients.Methods This is a single centre, observational, retrospective study carried out at Sir Ganga Ram Hospital, Delhi, India. the burden of comorbidities on the prognosis and clinical outcome of COVID-19 patients admitted patients from April 8, 2020, to October 4, 2020. Chi-square and relative risk test were used to observe the association of comorbidities and disease prognosis.Results A total of 2586 patients were included in the study consisting of 69.6% of male patients. All the comorbidities were significantly associated with ICU admission and mortality. The relative risk showed that CKD is most prone to severity as well as mortality of the COVID-19 infection followed by HTN and DM. Further with the increase in comorbidity, the risk of ICU admission and mortality increases.Conclusion Diabetes, hypertension and CKD, all are associated with progression of COVID-19 disease to severity and higher mortality risk. The number of underlying comorbid condition is directly proportional to the progression of disease severity and mortality.