Back to Journals » Clinical Epidemiology » Volume 8

The Danish Heart Registry

Authors Özcan C, Juel K, Flensted Lassen J, von Kappelgaard LM, Mortensen PE, Gislason G

Received 29 November 2015

Accepted for publication 1 March 2016

Published 25 October 2016 Volume 2016:8 Pages 503—508


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Professor Henrik Toft Sørensen

Cengiz Özcan,1,2 Knud Juel,1 Jens Flensted Lassen,3 Lene Mia von Kappelgaard,1 Poul Erik Mortensen,4 Gunnar Gislason1,2

1The National Institute of Public Health, University of Southern Denmark, Copenhagen K, Denmark; 2Department of Cardiology, Copenhagen University Hospital Gentofte, Hellerup, Denmark; 3Department of Cardiology, The Heart Center, Copenhagen University Hospital Rigshospitalet, Copenhagen Ø, Denmark; 4Department of Thoracic Surgery, Odense University Hospital, Odense C, Denmark

Aim: The Danish Heart Registry (DHR) seeks to monitor nationwide activity and quality of invasive diagnostic and treatment strategies in patients with ischemic heart disease as well as valvular heart disease and to provide data for research.
Study population: All adult ($15 years) patients undergoing coronary angiography (CAG), percutaneous coronary intervention (PCI), coronary artery bypass grafting, and heart valve surgery performed across all Danish hospitals were included.
Main variables: The DHR contains a subset of the data stored in the Eastern and Western Denmark Heart Registries (EDHR and WDHR). For each type of procedure, up to 70 variables are registered in the DHR. Since 2010, the data quality protocol encompasses fulfillment of web-based validation rules of daily-submitted records and yearly approval of the data by the EDHR and WDHR.
Descriptive data: The data collection on procedure has been complete for PCI and surgery since 2000, and for CAG as of 2006. From 2000 to 2014, the number of CAG, PCI, and surgical procedures changed by 231%, 193%, and 99%, respectively. Until the end of 2014, a total of 357,476 CAG, 131,309 PCI, and 60,831 surgical procedures had been performed, corresponding to 249,445, 100,609, and 55,539 first-time patients, respectively. The DHR generally has a high level of completeness (1–missing) of each procedure (.90%) when compared to the National Patient Registry. Variables important for assessing the quality of care have a high level of completeness for surgery since 2000, and for CAG and PCI since 2010.
Conclusion: The DHR contains valuable data on cardiac invasive procedures, which makes it an important national monitoring and quality system and at the same time serves as a platform for research projects in the cardiovascular field.

nationwide, coronary angiography, percutaneous coronary intervention, cardiac surgery

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]