clinical chemistry

Development and validation of an early warning score to identify COVID-19 in the emergency department based on routine laboratory tests: a multicentre case–control study
Arjen-Kars Boer, Ruben Deneer, Maaike Maas, Heidi S M Ammerlaan, Roland H H van Balkom, Wendy A H M Thijssen, Sophie Bennenbroek, Mathie Leers, Remy J H Martens, Madelon M Buijs, Jos J Kerremans, Muriël Messchaert, Jeroen J van Suijlen, Natal A W van Riel, Volkher Scharnhorst

BMJ Open Aug 2022, 12 (8) e059111; DOI: 10.1136/bmjopen-2021-059111
SARS-CoV-2 RBD-specific and NP-specific antibody response of healthcare workers in the westernmost Austrian state Vorarlberg: a prospective cohort study
Michele Atzl, Axel Muendlein, Thomas Winder, Peter Fraunberger, Eva-Maria Brandtner, Kathrin Geiger, Miriam Klausberger, Mark Duerkop, Lukas Sprenger, Beatrix Mutschlechner, Andreas Volgger, Magdalena Benda, Luciano Severgnini, Johannes B Jaeger, Heinz Drexel, Alois Lang, Andreas Leiherer

BMJ Open May 2022, 12 (5) e052130; DOI: 10.1136/bmjopen-2021-052130
Blood cell differential count discretisation modelling to predict survival in adults reporting to the emergency room: a retrospective cohort study
Riccardo Mario Fumagalli, Marco Chiarelli, Massimo Cazzaniga, Claudio Bonato, Luciano D'Angelo, Luca Cavalieri D'Oro, Mario Cerino, Sabina Terragni, Elisa Lainu, Cristina Lorini, Claudio Scarazzati, Sara Elisabetta Tazzari, Francesca Porro, Simone Aldé, Morena Burati, William Brambilla, Stefano Nattino, Matteo Locatelli, Daria Valsecchi, Paolo Spreafico, Valter Tantardini, Gianpaolo Schiavo, Mauro Pietro Zago, Luca Andrea Mario Fumagalli

BMJ Open Nov 2023, 13 (11) e071937; DOI: 10.1136/bmjopen-2023-071937
Validating a clinical laboratory parameter-based deisolation algorithm for patients with COVID-19 in the intensive care unit using viability PCR: the CoLaIC multicentre cohort study protocol
Tom Schoenmakers, Bas C T van Bussel, Stefan H M Gorissen, Inge H M van Loo, Frank van Rosmalen, Wilhelmine P H G Verboeket-van de Venne, Petra F G Wolffs, Walter N K A van Mook, Mathie P G Leers

BMJ Open Feb 2023, 13 (2) e069455; DOI: 10.1136/bmjopen-2022-069455
Influence of serum iron test results on the diagnosis of iron deficiency in children: a retrospective observational study
Gorkem Sezgin, Ling Li, Johanna Westbrook, Elisabeth Wearne, Denise Azar, Adam McLeod, Christopher Pearce, Vera Ignjatovic, Paul Monagle, A Georgiou

BMJ Open Jul 2021, 11 (7) e046865; DOI: 10.1136/bmjopen-2020-046865
Optimal VAsopressor TitraTION in patients 65 years and older (OVATION-65): protocol and statistical analysis plan for a randomised clinical trial
Marie-Hélène Masse, Marie-Claude Battista, Mary Elizabeth Wilcox, Ruxandra Pinto, Nicole Marinoff, Frédérick D'Aragon, Charles St-Arnaud, Michael Mayette, Marc-André Leclair, Hector Quiroz Martinez, Brian Grondin-Beaudoin, Yannick Poulin, Élaine Carbonneau, Andrew J E Seely, Irene Watpool, Rebecca Porteous, Michaël Chassé, Martine Lebrasseur, François Lauzier, Alexis F Turgeon, David Bellemare, Sangeeta Mehta, Emmanuel Charbonney, Émilie Belley-Côté, Édouard Botton, Dian Cohen, François Lamontagne, Neill K J Adhikari, OVATION-65 team members

BMJ Open Nov 2020, 10 (11) e037947; DOI: 10.1136/bmjopen-2020-037947
Distribution and specificity of high-sensitivity cardiac troponin T in older adults without acute cardiac conditions: cross-sectional results from the population-based AugUR study
Alexander Dietl, Martina E Zimmermann, Caroline Brandl, Stefan Wallner, Ralph Burkhardt, Lars S Maier, Andreas Luchner, Iris M Heid, Klaus J Stark

BMJ Open Nov 2021, 11 (11) e052004; DOI: 10.1136/bmjopen-2021-052004
Serum 25-hydroxyvitamin D and risk of cancer in a large community population under investigation for cardiovascular disease: a retrospective cohort study
Jaeun Yang, Yuan Dong, Christopher T Naugler, Lawrence de Koning

BMJ Open Jan 2022, 12 (1) e056543; DOI: 10.1136/bmjopen-2021-056543
Qualitative analysis of stakeholder interviews to identify the barriers and facilitators to the adoption of point-of-care diagnostic tests in the UK
Jeremy R Huddy, Melody Zhifang Ni, James Barlow, George B Hanna

BMJ Open Apr 2021, 11 (4) e042944; DOI: 10.1136/bmjopen-2020-042944
Retrospective case–control study to evaluate hypocalcaemia as a distinguishing feature of COVID-19 compared with other infective pneumonias and its association with disease severity
Meera Mehta, Hakim Ghani, Felix Chua, Adrian Draper, Sam Calmonson, Meghna Prabhakar, Rijul Shah, Alessio Navarra, Tejal Vaghela, Andrew Barlow, Rama Vancheeswaran

BMJ Open Dec 2021, 11 (12) e053810; DOI: 10.1136/bmjopen-2021-053810

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