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Clinical characteristics and risk factors associated with severe COVID-19: prospective analysis of 1,045 hospitalised cases in North-Eastern France, March 2020
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View Affiliations Hide AffiliationsFrançois Danionfrancois.danion chru-strasbourg.fr
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COVID Alsace Study Group: Hamid Merdji, Paul-Michel Mertes, Walid Oulehri, Charles Tacquard, Olivier Collange, Pierre-Olivier Ludes, Sophie Diemunsch, Francis Schneider, Thomas Lemmet, Anne-Sophie Damour, Martin Behr, Pierrick Le Borgne, Emmanuel Chatelus, Renaud Felten, Adrien Zecchi, Flavie Maitrepierre, Jean-Edouard Terrade, Louis Boehn, Abrar Ahmad Zulfiqar, Aurélien Guffroy, Vincent Poindron, Sylvain Lescuyer, Elise Schmitt, Cédric Waechter, Cécile Ronde-Oustau, Frédéric De Blay, Philippe Fraisse, Peggy Perrin, Nicolas Keller, Mary Pontvianne, Fanny De Marcillac, Philippe Deruelle, Marie-Laure Legris, Mégane Wehr, Floriane Zeyons, Jean-Jacques Von Hunolstein, Pierre Leyendecker, Mickael Ohana, Aissam Labani, Clémence Risser, Thibaut Goetsch, Noémie Leclerc Du Sablon, Marion Ehret, Frederic Vinee, Myriam Bernard, Clémence Koch, Arnaud Waegell, Léa Dormegny, Alexandra Daguet, Stéphanie Deboscker, Thierry Lavigne, Samira Fafi-Kremer, Aurélie Velay, Morgane Solis, Marie-Josée Wendling, Héloïse Delagreverie, Ilies Benotmane, Elise Dicop, Lionel Martzolff, Pierre OudevilleView Citation Hide Citation
Citation style for this article: . Clinical characteristics and risk factors associated with severe COVID-19: prospective analysis of 1,045 hospitalised cases in North-Eastern France, March 2020. Euro Surveill. 2020;25(48):pii=2000895. https://doi.org/10.2807/1560-7917.ES.2020.25.48.2000895 Received: 11 May 2020; Accepted: 14 Aug 2020
Abstract
In March 2020, the COVID-19 outbreak was declared a pandemic by the World Health Organization.
Our objective was to identify risk factors predictive of severe disease and death in France.
In this prospective cohort study, we included patients ≥ 18 years old with confirmed COVID-19, hospitalised in Strasbourg and Mulhouse hospitals (France), in March 2020. We respectively compared patients who developed severe disease (admission to an intensive care unit (ICU) or death) and patients who died, to those who did not, by day 7 after hospitalisation.
Among 1,045 patients, 424 (41%) had severe disease, including 335 (32%) who were admitted to ICU, and 115 (11%) who died. Mean age was 66 years (range: 20–100), and 612 (59%) were men. Almost 75% of patients with body mass index (BMI) data (n = 897) had a BMI ≥ 25 kg/m2 (n = 661). Independent risk factors associated with severe disease were advanced age (odds ratio (OR): 1.1 per 10-year increase; 95% CrI (credible interval): 1.0–1.2), male sex (OR: 2.1; 95% CrI: 1.5–2.8), BMI of 25–29.9 kg/m2 (OR: 1.8; 95% CrI: 1.2–2.7) or ≥ 30 (OR: 2.2; 95% CrI: 1.5–3.3), dyspnoea (OR: 2.5; 95% CrI: 1.8–3.4) and inflammatory parameters (elevated C-reactive protein and neutrophil count, low lymphocyte count). Risk factors associated with death were advanced age (OR: 2.7 per 10-year increase; 95% CrI: 2.1–3.4), male sex (OR: 1.7; 95% CrI: 1.1–2.7), immunosuppression (OR: 3.8; 95% CrI: 1.6–7.7), diabetes (OR: 1.7; 95% CrI: 1.0–2.7), chronic kidney disease (OR: 2.3; 95% CrI: 1.3–3.9), dyspnoea (OR: 2.1; 95% CrI: 1.2–3.4) and inflammatory parameters.
Overweightedness, obesity, advanced age, male sex, comorbidities, dyspnoea and inflammation are risk factors for severe COVID-19 or death in hospitalised patients. Identifying these features among patients in routine clinical practice might improve COVID-19 management.
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