Can we trust the prediction model? Demonstrating the importance of external validation by investigating the COVID-19 Vulnerability (C-19) Index across an international network of observational healthcare datasets
Jenna Reps(Janssen (United States)), Peter R. Rijnbeek(Erasmus MC), Christian Reich(IQVIA (United States)), Anna Ostropolets(Columbia University), Fredrik Nyberg(National Academy of Medicine), Jitendra Jonnagaddala(UNSW Sydney), Thomas Falconer(Columbia University), Daniel R. Morales(University of Dundee), Paula Casajust, Scott L. DuVall(University of Utah), Daniel Prieto‐Alhambra(Nuffield Orthopaedic Centre), Marc A. Suchard(University of California, Los Angeles), Ross D. Williams(Erasmus MC), Maria Tereza Fernandes Abrahão(Universidade de São Paulo), Siaw‐Teng Liaw(UNSW Sydney), Benjamin Skov Kaas‐Hansen(Copenhagen University Hospital), Young Hwa Choi(Ajou University), George Hripcsak(Columbia University), Talita Duarte Salles(Institut Universitari d'Investigació en Atenció Primària Jordi Gol), Sergio Fernández‐Bertolín(Institut Universitari d'Investigació en Atenció Primària Jordi Gol), Gowtham Rao(United States Department of Veterans Affairs), Azza Shoaibi(Office for National Statistics), Kristin Kostka(Nuffield Orthopaedic Centre), Seng Chan You(Ajou University), Patrick Ryan(Johnson & Johnson (United States)), Chungsoo Kim(Ajou University), María Aragón(University of the Coast), Rae Woong Park(Ajou University), Carlos Areia(University of Oxford), Cynthia Yang(Erasmus MC), Ewout W. Steyerberg(Erasmus MC), Andrew E. Williams(Tufts Medical Center), Aniek F. Markus(Erasmus MC), Lin Zhang(The University of Melbourne), Michael E. Matheny(Department of Veterans Affairs)
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