RT Journal Article T1 The age again in the eye of the COVID-19 storm: evidence-based decision making. A1 Martin, Maria C A1 Jurado, Aurora A1 Abad-Molina, Cristina A1 Orduña, Antonio A1 Yarce, Oscar A1 Navas, Ana M A1 Cunill, Vanesa A1 Escobar, Danilo A1 Boix, Francisco A1 Burillo-Sanz, Sergio A1 Vegas-Sanchez, Maria C A1 Jimenez-de Las Pozas, Yesenia A1 Melero, Josefa A1 Aguilar, Marta A1 Sobieschi, Oana Irina A1 Lopez-Hoyos, Marcos A1 Ocejo-Vinyals, Gonzalo A1 San Segundo, David A1 Almeida, Delia A1 Medina, Silvia A1 Fernandez, Luis A1 Vergara, Esther A1 Quirant, Bibiana A1 Martinez-Caceres, Eva A1 Boiges, Marc A1 Alonso, Marta A1 Esparcia-Pinedo, Laura A1 Lopez-Sanz, Celia A1 Muñoz-Vico, Javier A1 Lopez-Palmero, Serafin A1 Trujillo, Antonio A1 Alvarez, Paula A1 Prada, Alvaro A1 Monzon, David A1 Ontañon, Jesus A1 Marco, Francisco M A1 Mora, Sergio A1 Rojo, Ricardo A1 Gonzalez-Martinez, Gema A1 Martinez-Saavedra, Maria T A1 Gil-Herrera, Juana A1 Cantenys-Molina, Sergi A1 Hernandez, Manuel A1 Perurena-Prieto, Janire A1 Rodriguez-Bayona, Beatriz A1 Martinez, Alba A1 Ocaña, Esther A1 Molina, Juan K1 Area under the curve K1 COVID-19 K1 Cut-off points K1 Immunity K1 Immunosenescence K1 Lockdown K1 Lymphocytes K1 Renin-angiotensin-aldosterone system inhibitors K1 Severe acute respiratory syndrome coronavirus 2 AB One hundred fifty million contagions, more than 3 million deaths and little more than 1 year of COVID-19 have changed our lives and our health management systems forever. Ageing is known to be one of the significant determinants for COVID-19 severity. Two main reasons underlie this: immunosenescence and age correlation with main COVID-19 comorbidities such as hypertension or dyslipidaemia. This study has two aims. The first is to obtain cut-off points for laboratory parameters that can help us in clinical decision-making. The second one is to analyse the effect of pandemic lockdown on epidemiological, clinical, and laboratory parameters concerning the severity of the COVID-19. For these purposes, 257 of SARSCoV2 inpatients during pandemic confinement were included in this study. Moreover, 584 case records from a previously analysed series, were compared with the present study data. Concerning the characteristics of lockdown series, mild cases accounted for 14.4, 54.1% were moderate and 31.5%, severe. There were 32.5% of home contagions, 26.3% community transmissions, 22.5% nursing home contagions, and 8.8% corresponding to frontline worker contagions regarding epidemiological features. Age > 60 and male sex are hereby confirmed as severity determinants. Equally, higher severity was significantly associated with higher IL6, CRP, ferritin, LDH, and leukocyte counts, and a lower percentage of lymphocyte, CD4 and CD8 count. Comparing this cohort with a previous 584-cases series, mild cases were less than those analysed in the first moment of the pandemic and dyslipidaemia became more frequent than before. IL-6, CRP and LDH values above 69 pg/mL, 97 mg/L and 328 U/L respectively, as well as a CD4 T-cell count below 535 cells/μL, were the best cut-offs predicting severity since these parameters offered reliable areas under the curve. Age and sex together with selected laboratory parameters on admission can help us predict COVID-19 severity and, therefore, make clinical and resource management decisions. Demographic features associated with lockdown might affect the homogeneity of the data and the robustness of the results. PB BioMed Central SN 1742-4933 YR 2021 FD 2021-05-11 LK http://hdl.handle.net/10668/17811 UL http://hdl.handle.net/10668/17811 LA en NO Martín MC, Jurado A, Abad-Molina C, Orduña A, Yarce O, Navas AM, et al. The age again in the eye of the COVID-19 storm: evidence-based decision making. Immun Ageing. 2021 May 20;18(1):24 DS RISalud RD Apr 19, 2025