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Prognostic value of estimated glomerular filtration rate in hospitalised older patients (over 65) with COVID-19: a multicentre, European, observational cohort study

Carter, Ben, Ramsay, Euan A., Short, Roxanna, Goodison, Sarah, Lumsden, Jane, Khan, Amarah, Braude, Philip, Vilches-Moraga, Arturo, Quinn, Terence J., McCarthy, Kathryn, Hewitt, Jonathan ORCID:, Myint, Phyo K., Bruce, Eilidh, Einarsson, Alice, McCrorie, Kirsty, Aggrey, Ken, Bilan, Jimmy, Hartrop, Kerr, Murphy, Caitlin, McGovern, Aine, Clini, Enrico, Guaraldi, Giovanni, Verduri, Alessia, Bisset, Carly, Alexander, Ross, Kelly, Joanna, Murphy, Caroline, Mutasem, Tarik El Jichi, Singh, Sandeep, Paxton, Dolcie, Harris, Will, Moug, Susan, Galbraith, Norman, Bhatti, Emma, Edwards, Jenny, Duffy, Siobhan, Espinoza, Maria Fernanda Ramon, Kneen, Thomas, Dafnis, Anna, Allafi, Hala, Vidal, Maria Narro, Price, Angeline, Pearce, Lyndsay, Lee, Thomas, Sangani, Shefali, Garcia, Madeline, Davey, Charlotte, Jones, Sheila, Lunstone, Kiah, Cavenagh, Alice, Silver, Charlotte, Telford, Thomas and Simmons, Rebecca 2022. Prognostic value of estimated glomerular filtration rate in hospitalised older patients (over 65) with COVID-19: a multicentre, European, observational cohort study. BMC Geriatrics 22 (1) , 119. 10.1186/s12877-022-02782-5

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Background The reduced renal function has prognostic significance in COVID-19 and it has been linked to mortality in the general population. Reduced renal function is prevalent in older age and thus we set out to better understand its effect on mortality. Methods Patient clinical and demographic data was taken from the COVID-19 in Older People (COPE) study during two periods (February–June 2020 and October 2020–March 2021, respectively). Kidney function on admission was measured using estimated glomerular filtration rate (eGFR). The primary outcomes were time to mortality and 28-day mortality. Secondary outcome was length of hospital stay. Data were analysed with multilevel Cox proportional hazards regression, and multilevel logistic regression and adjusted for individual patient clinical and demographic characteristics. Results One thousand eight hundred two patients (55.0% male; median [IQR] 80 [73–86] years) were included in the study. 28-day mortality was 42.3% (n = 742). 48% (n = 801) had evidence of renal impairment on admission. Using a time-to-event analysis, reduced renal function was associated with increased in-hospital mortality (compared to eGFR ≥ 60 [Stage 1&2]): eGFR 45–59 [Stage 3a] aHR = 1.26 (95%CI 1.02–1.55); eGFR 30–44 [Stage 3b] aHR = 1.41 (95%CI 1.14–1.73); eGFR 1–29 [Stage 4&5] aHR = 1.42 (95%CI 1.13–1.80). In the co-primary outcome of 28-day mortality, mortality was associated with: Stage 3a adjusted odds ratio (aOR) = 1.18 (95%CI 0.88–1.58), Stage 3b aOR = 1.40 (95%CI 1.03–1.89); and Stage 4&5 aOR = 1.65 (95%CI 1.16–2.35). Conclusion eGFR on admission is a good independent predictor of mortality in hospitalised older patients with COVID-19 population. We found evidence of a dose-response between reduced renal function and increased mortality.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Centre for Trials Research (CNTRR)
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher: BioMed Central
ISSN: 1471-2318
Date of First Compliant Deposit: 18 February 2022
Date of Acceptance: 24 January 2022
Last Modified: 23 May 2023 19:47

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