한빛사논문
Hyun Lee1,5, Hayoung Choi2,5, Bumhee Yang3,5, Sun-Kyung Lee1,4, Tai Sun Park1, Dong Won Park1, Ji-Yong Moon1, Tae-Hyung Kim1, Jang Won Sohn1, Ho Joo Yoon1, Sang-Heon Kim1,*
1Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea. 2Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea. 3Division of Pulmonary and Critical Care Medicine, Department of Medicine, Chungbuk National University Hospital, Cheongju, Korea. 4Department of Mathematics, College of Natural Sciences, Hanyang University. 5These three authors contributed equally to this work.
*Correspondence: Sang-Heon Kim, Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, 222-1, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
Abstract
Background
There are limited data regarding the relationship between interstitial lung disease (ILD) and the natural course of coronavirus disease 2019 (COVID-19). In this study, we investigate whether patients with ILD are more susceptible to COVID-19 than those without ILD and evaluate the impact of ILD on disease severity in patients with COVID-19.
Methods
A nationwide cohort of patients with COVID-19 (n=8070) and a 1:15 age-, sex-, and residence-matched cohort (n=121 050) were constructed between January 1, 2020 and May 30, 2020 in Korea. We performed a nested case-control study to compare the proportions of patients with ILD between the COVID-19 cohort and the matched cohort. Using the COVID-19 cohort, we also evaluated the risk of severe COVID-19 in patients with ILD versus those without ILD.
Results
The proportion of patients with ILD was significantly higher in the COVID-19 cohort than in the matched cohort (0.8% versus 0.4%, p<0.001). The odds ratio [OR] of having ILD was significantly higher in the COVID-19 cohort than in the matched cohort (adjusted OR=2.02, 95% confidence interval [CI]=1.54–2.61). Among patients in the COVID-19 cohort, patients with ILD were more likely to have severe COVID-19 than patients without ILD (49.3% versus 13.1%), including mortality (13.4% versus 2.8%) (all p<0.01). The risk of severe COVID-19 was significantly higher in patients with ILD than in those without ILD (adjusted OR=2.32, 95% CI=1.24–4.01).
Conclusion
The risks of COVID-19 and severe presentation were significantly higher in patients with ILD than in those without ILD.
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