Positive predictive value of respiratory infection diagnoses in the Danish National Patient Registry: A post hoc validation analysis of the DANFLU-1 trial.

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Title: Positive predictive value of respiratory infection diagnoses in the Danish National Patient Registry: A post hoc validation analysis of the DANFLU-1 trial.
Authors: Christensen J; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Johansen ND; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Bernholm KF; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Borchsenius JIH; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Janstrup KH; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Modin D; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Skaarup KG; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Nealon J; Sanofi, Lyon, France., Samson S; Sanofi, Lyon, France., Loiacono M; Sanofi, Morristown, New Jersey, USA; Department of Epidemiology, University of Delaware, Newark, USA., Huang Y; Sanofi, Chengdu, China., Harris R; Sanofi, Singapore, Singapore., Larsen CS; Department of Clinical Medicine, Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark., Jensen AMR; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Landler NE; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Claggett BL; Harvard Medical School, Boston, USA., Solomon SD; Harvard Medical School, Boston, USA., Gislason GH; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark., Køber L; Department of Cardiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark., Landray MJ; Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Public Health, University of Oxford, Oxford, United Kingdom; Big Data Institute, University of Oxford, Oxford, United Kingdom., Sivapalan P; Department of Medicine, Respiratory Medicine Section, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark., Jensen JUS; Department of Medicine, Respiratory Medicine Section, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark., Biering-Sørensen T; Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark; Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR), Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark. Electronic address: tor.biering@gmail.com.
Source: International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases [Int J Infect Dis] 2026 Jul; Vol. 168, pp. 108703. Date of Electronic Publication: 2026 Apr 13.
Publication Type: Journal Article; Validation Study
Journal Info: Publisher: Elsevier Country of Publication: Canada NLM ID: 9610933 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-3511 (Electronic) Linking ISSN: 12019712 NLM ISO Abbreviation: Int J Infect Dis Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1878-3511
DOI:10.1016/j.ijid.2026.108703