Association between asthma and clinical mortality/morbidity in COVID-19 patients using clinical epidemiologic data from Korean Disease Control & PreventionHyo-Geun Choi1, Jee Hye Wee2, So Young Kim2, Joo-Hee Kim3, Hwan Il Kim3, Ji-Young Park3, Sunghoon Park3, Yong Il Hwang3, Seung Hun Jang3, and Ki-Suck Jung31 Departments of Otorhinolaryngology-Head & Neck Surgery, Hallym UniversitySacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea2 Department of Otorhinolaryngology-Head & Neck Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea3 Division of Pulmonary, Allergy, and Critical Care Medicine, Department ofMedicine, Hallym University Sacred Heart Hospital, Hallym University Collegeof Medicine, Anyang, Korea
Background: The role of asthma as a risk factor for coronavirus 2019 (COVID-2019) morbidity and mortality is inconclusive and not fully understood. The primary objective was to evaluate the association between asthma history and mortality of COVID-19, and the secondary objective was to analyze the risk of COVID-19-related outcomes among patients with asthma compared to those without. Methods: Using clinical epidemiologic data from Korean Disease Control & Prevention, the risk for COVID-19-related morbidity and mortality were compared in patients with asthma and those without asthma among the participants who were confirmed to have COVID-19. A Cox proportional hazards regression model was used for mortality, and a linear regression model was used for morbidity scores. Results: The hazard ratio for death of patients with asthma versus those without was 2.48 (95% confidence interval (CI) 1.21-5.08, P=0.013) and 2.20 (95% CI 1.02-4.76, P=0.045) after full adjustment. The comorbidity of asthma was associated with an increase in the maximal morbidity score of COVID-19 compared to no asthma (estimated value of morbidity score (EV) = 0.44, 95% CI 0.16-0.73, P=0.003). Conclusion: Asthma is associated with an increased risk of mortality and morbidity in the Korean nationwide COVID-19 registry.