RT Journal Article T1 Risk Categories in COVID-19 Based on Degrees of Inflammation: Data on More Than 17,000 Patients from the Spanish SEMI-COVID-19 Registry. A1 Rubio-Rivas, Manuel A1 Corbella, Xavier A1 Formiga, Francesc A1 Menéndez Fernández, Estela A1 Martín Escalante, María Dolores A1 Baños Fernández, Isolina A1 Arnalich Fernández, Francisco A1 Del Corral-Beamonte, Esther A1 Lalueza, Antonio A1 Parra Virto, Alejandro A1 Roy Vallejo, Emilia A1 Loureiro-Amigo, José A1 Álvarez Suárez, Ana María A1 Abadía-Otero, Jesica A1 Navarro De La Chica, María A1 Estévez González, Raquel A1 Hernández Milián, Almudena A1 Areses Manrique, María A1 Blázquez Encinar, Julio César A1 González Noya, Amara A1 González Ferrer, Ruth A1 Pérez Aguilera, María A1 Gil Sánchez, Ricardo A1 Millán Núñez-Cortés, Jesús A1 Casas-Rojo, José Manuel A1 On Behalf Of The Semi-Covid-Network, K1 COVID-19 K1 cytokine storm K1 mortality K1 prognosis K1 risk factors AB (1) Background: The inflammation or cytokine storm that accompanies COVID-19 marks the prognosis. This study aimed to identify three risk categories based on inflammatory parameters on admission. (2) Methods: Retrospective cohort study of patients diagnosed with COVID-19, collected and followed-up from 1 March to 31 July 2020, from the nationwide Spanish SEMI-COVID-19 Registry. The three categories of low, intermediate, and high risk were determined by taking into consideration the terciles of the total lymphocyte count and the values of C-reactive protein, lactate dehydrogenase, ferritin, and D-dimer taken at the time of admission. (3) Results: A total of 17,122 patients were included in the study. The high-risk group was older (57.9 vs. 64.2 vs. 70.4 years; p SN 2077-0383 YR 2021 FD 2021-05-20 LK http://hdl.handle.net/10668/17880 UL http://hdl.handle.net/10668/17880 LA en DS RISalud RD Jun 1, 2025